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Tesarz J, Lange H, Kirchner M, Görlach A, Eich W, Friederich HC. Efficacy of supervised immersive virtual reality-based training for the treatment of chronic fatigue in post-COVID syndrome: study protocol for a double-blind randomized controlled trial (IFATICO Trial). Trials 2024; 25:232. [PMID: 38570805 PMCID: PMC10993519 DOI: 10.1186/s13063-024-08032-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 03/04/2024] [Indexed: 04/05/2024] Open
Abstract
BACKGROUND The treatment of persistent fatigue after COVID-19 infection is complex. On the one hand, it involves maintaining a sufficient level of physical and mental activity to counteract possible degenerative processes of the body and nervous system. On the other hand, physical and mental activities can also lead to worsening of symptoms. Therefore, the challenge in treating Post-COVID fatigue is to stimulate the body and central nervous system in a way that stimulates growth and improvement, but does not overtax individual physical and mental limits. Special training programs try to take these characteristics into account, but often reach their limits. A promising approach is offered by new fitness technologies based on immersive virtual realities that stimulate both body and brain while minimizing physical and psychological stress. The aim of this study is to investigate the efficacy of supervised immersive Virtual Reality (VR)-based activity training compared to conventional activity training for patients with Post-COVID-associated fatigue. METHODS In a single centre, individually randomised, prospective, double-blind two-arm exploratory superiority trial with parallel group design, N = 100 patients with persistent fatigue after COVID-19 infection will be recruited. The intervention includes a supervised immersive neuromuscular training (12 sessions of 30 min over 6 weeks) based on a novel VR-exercise device. We will systematically compare the effects of this intervention on Post-COVID-associated fatigue with a supervised conventional activation program of comparable scope without an immersive environment. The primary outcome is the difference between groups in absolute change in the mean fatigue symptom severity measured on the Fatigue Severity Scale (FSS) from baseline to posttreatment assessment. Posttreatment assessment in both groups will be conducted by blinded outcome assessors. At three and six months afterwards, patients are sent self-report questionnaires for follow up. The main analysis will be based on the intention-to-treat principle. DISCUSSION To the best of our knowledge, this is the first exploratory study on a supervised immersive neuromuscular training for the treatment of persistent fatigue after COVID-19 infection. TRIAL REGISTRATION German register for clinical studies (ID: DRKS00032059) Prospectively registered on June 16th 2023. URL of trial registration.
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Affiliation(s)
- Jonas Tesarz
- Department of General Internal Medicine and Psychosomatics, Heidelberg University, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany, Germany.
- DZPG (German Centre for Mental Health), Partner Site Heidelberg/ Mannheim/ Ulm, Heidelberg, Germany.
| | - Hannah Lange
- Department of General Internal Medicine and Psychosomatics, Heidelberg University, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany, Germany
| | - Marietta Kirchner
- Institute of Medical Biometry, University of Heidelberg, Heidelberg, Germany
| | - Axel Görlach
- Department of General Internal Medicine and Psychosomatics, Heidelberg University, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany, Germany
| | - Wolfgang Eich
- Department of General Internal Medicine and Psychosomatics, Heidelberg University, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany, Germany
| | - Hans-Christoph Friederich
- Department of General Internal Medicine and Psychosomatics, Heidelberg University, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany, Germany
- DZPG (German Centre for Mental Health), Partner Site Heidelberg/ Mannheim/ Ulm, Heidelberg, Germany
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Zaman R, Ravichandran V, Tan CK. Role of dietary supplements in the continuous battle against COVID-19. Phytother Res 2024; 38:1071-1088. [PMID: 38168043 DOI: 10.1002/ptr.8096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 11/13/2023] [Accepted: 12/04/2023] [Indexed: 01/05/2024]
Abstract
A sudden outbreak of the COVID-19 pandemic was a big blow to the world community on every level. Created by a novel coronavirus, SARS-CoV-2, which was previously unknown to the human immune system. The expert opinion almost immediately united on the fact that the most effective way of fighting the pandemic would be by building immunity artificially via a mass immunization program. However, it took about a year for the approval of the first vaccine against COVID-19. In the meantime, a big part of the general population started adapting nutritious diet plans and dietary supplements to boost natural immunity as a potential prophylactic strategy against SARS-CoV-2 infection. Whether they originate from mainstream medicine, such as synthetic supplements, or traditional herbal remedies in the form of single or poly-herbs, these supplements may comprise various components that exhibit immunomodulatory, anti-inflammatory, antioxidant, and antimicrobial characteristics. There is a substantial body of predictions and expert opinions suggesting that enhancing one's diet with dietary supplements containing additional nutrients and bioactive compounds like vitamins, minerals, amino acids, fatty acids, phytochemicals, and probiotics can enhance the immune system's ability to develop resistance against COVID-19, although none of them have any conclusive evidence nor officially recommended by World Health Organization (WHO). The current review critically acclaims the gap between public perception-based preference and real evidence-based study to weigh the actual benefit of dietary supplements in relation to COVID-19 prevention and management.
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Affiliation(s)
- Rahela Zaman
- School of Healthy Aging, Aesthetics and Regenerative Medicine, Faculty of Medicine and Health Sciences, UCSI University, Kuala Lumpur, Malaysia
| | - Vignesh Ravichandran
- School of Healthy Aging, Aesthetics and Regenerative Medicine, Faculty of Medicine and Health Sciences, UCSI University, Kuala Lumpur, Malaysia
| | - Chung Keat Tan
- School of Healthy Aging, Aesthetics and Regenerative Medicine, Faculty of Medicine and Health Sciences, UCSI University, Kuala Lumpur, Malaysia
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Weigl M, Beeck S, Kraft E, Stubbe HC, Adorjan K, Ruzicka M, Lemhöfer C. Multidisciplinary rehabilitation with a focus on physiotherapy in patients with Post Covid19 condition: an observational pilot study. Eur Arch Psychiatry Clin Neurosci 2024:10.1007/s00406-023-01747-y. [PMID: 38231399 DOI: 10.1007/s00406-023-01747-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 12/11/2023] [Indexed: 01/18/2024]
Abstract
There is a lack of interventions that treat the Post-Covid-19 Condition (PCC) itself. Accordingly, treatment guidelines recommend physiotherapy interventions to alleviate symptoms and enhance functioning. In cases where unimodal treatments prove ineffective, non-organ-specific multidisciplinary bio-psycho-social rehabilitation (MBR) programs are a suitable option. In a pilot observational study with assessments at the entry and end of treatment we aimed to evaluate the feasibility of a 3-week day clinic MBR program and explore its effects on physical functioning in PCC patients with fatigue and reduced physical capacity. Patient selection was based on an interdisciplinary assessment involving a physician, a psychologist and a physiotherapist. Feasibility was determined based on full participation (≥ 8 of 9 days) and maintenance of stable endurance in the 6-Minute Walk Test (6MWT). From 37 patients included in the study, 33 completed the MBR (mean age: 43 ± 12 years, 73% female). Four patients discontinued the MBR, with two of them having reported deterioration of PCC symptoms. The 6MWT showed a numerical improvement from 501 ± 97 m to 512 ± 87 m, although it did not reach statistical significance. These results support the feasibility of outpatient MBR with a focus on active physiotherapy interventions in PCC patients with fatigue. This study aligns with previous research supporting the effectiveness of physiotherapy and rehabilitation in PCC patients. However, further research is needed to address possible different treatment responses and varying treatment approaches in subgroups of PCC patients.
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Affiliation(s)
- Martin Weigl
- Department of Orthopaedics and Trauma Surgery, Physical and Rehabilitation Medicine, Musculoskeletal University Center Munich (MUM), University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
| | - Saskia Beeck
- Department of Orthopaedics and Trauma Surgery, Physical and Rehabilitation Medicine, Musculoskeletal University Center Munich (MUM), University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Eduard Kraft
- Department of Orthopaedics and Trauma Surgery, Physical and Rehabilitation Medicine, Musculoskeletal University Center Munich (MUM), University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Munich Municipal Hospital Group, Munich, Germany
| | - Hans Christian Stubbe
- Department of Psychiatry and Psychotherapy, LMU University Hospital Munich, Munich, Germany
| | - Kristina Adorjan
- Department of Medicine II, LMU University Hospital Munich, Munich, Germany
| | - Michael Ruzicka
- Department of Medicine III, University Hospital, LMU Munich, Munich, Germany
| | - Christina Lemhöfer
- Institute of Physical and Rehabilitation Medicine, Jena University Hospital, Jena, Germany
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Gómez-Sánchez L, Tamayo-Morales O, Suárez-Moreno N, Bermejo-Martín JF, Domínguez-Martín A, Martín-Oterino JA, Martín-González JI, González-Calle D, García-García Á, Lugones-Sánchez C, González-Sánchez S, Jiménez-Gómez R, García-Ortiz L, Gómez-Marcos MA, Navarro-Matías E. Relationship between the structure, function and endothelial damage, and vascular ageing and the biopsychological situation in adults diagnosed with persistent COVID (BioICOPER study). A research protocol of a cross-sectional study. Front Physiol 2023; 14:1236430. [PMID: 37772064 PMCID: PMC10523018 DOI: 10.3389/fphys.2023.1236430] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 08/17/2023] [Indexed: 09/30/2023] Open
Abstract
Background: SARS-CoV-2 infection affects the vascular endothelium, which mediates the inflammatory and thrombotic cascade. Moreover, alterations in the endothelium are related to arterial stiffness, which has been established as a marker of cardiovascular disease. The objective of this study is to analyse how the structure, vascular function, vascular ageing and endothelial damage are related to the biopsychological situation in adults diagnosed with persistent COVID and the differences by gender. Methods: This cross-sectional, descriptive, observational study will be carried out in the Primary Care Research Unit of Salamanca (APISAL) and in the BioSepsis laboratory of the University of Salamanca. The sample will be selected from the persistent COVID monographic office at the Internal Medicine Service of the University Hospital of Salamanca, and from the population of subjects diagnosed with persistent COVID in the clinical history of Primary Care. Through consecutive sampling, the study will include 300 individuals diagnosed with persistent COVID who meet the diagnosis criteria established by the WHO, after they sign the informed consent. Endothelial damage biomarkers will be measured using ELLA-SimplePlexTM technology (Biotechne). Their vascular structure and function will be analysed by measuring the carotid intima-media thickness (Sonosite Micromax); the pulse wave and carotid-femoral pulse wave velocity (cfPWV) will be recorded with Sphygmocor System®. Cardio Ankle Vascular Index (CAVI), brachial-ankle pulse wave velocity (baPWV) and ankle-brachial index will be analysed with Vasera VS-2000®. The integral assessment of the subjects with persistent COVID will be conducted with different scales that evaluate fatigue, sleep, dyspnea, quality of life, attention, nutrition state, and fragility. We will also evaluate their lifestyles (diet, physical activity, smoking habits and alcohol consumption), psychological factors, and cognitive deterioration, which will be gathered through validated questionnaires; moreover, physical activity will be objectively measured using a pedometer for 7 days. Body composition will be measured through impedance using an Inbody 230. Vascular ageing will be calculated with 10 and 90 percentiles of cfPWV and baPWV. Furthermore, we will analyse the presence of vascular injury in the retina, heart, kidneys and brain, as well as cardiovascular risk. Demographic and analytical variables will also be gathered. Discussion: Arterial stiffness reflects the mechanic and functional properties of the arterial wall, showing the changes in arterial pressure, blood flow, and vascular diameter that occur with each heartbeat. SARS-CoV-2 affects the endothelial cells that are infected with this virus, increasing the production of pro-inflammatory cytokines and pro-thrombotic factors, which can cause early vascular ageing and an increase of arterial stiffness. Persistent COVID is a complex heterogeneous disorder that affects the lives of millions of people worldwide. The identifications of potential risk factors to better understand who is at risk of developing persistent COVID is important, since this would enable early and appropriate clinical support. It is unknown whether vascular alterations caused by COVID-19 resolve after acute infection or remain over time, favouring the increase of arterial stiffness and early vascular ageing. Therefore, it is necessary to propose studies that analyse the evolution of persistent COVID in this group of patients, as well as the possible variables that influence it. Clinical Trial registration: ClinicalTrials.gov, identifier NCT05819840.
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Affiliation(s)
- Leticia Gómez-Sánchez
- Primary Care Research Unit of Salamanca (APISAL), Salamanca Primary Care Management, Salamanca, Spain
- Hospital de la Paz de Madrid, Servicio de Urgencias, Madrid, Spain
| | - Olaya Tamayo-Morales
- Primary Care Research Unit of Salamanca (APISAL), Salamanca Primary Care Management, Salamanca, Spain
- Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
- Research Network on Chronicity, Primary Care and Health Promotion (RICAPPS), Salamanca, Spain
| | - Nuria Suárez-Moreno
- Primary Care Research Unit of Salamanca (APISAL), Salamanca Primary Care Management, Salamanca, Spain
- Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
- Castilla and León Health Service–SACYL, Gerencia Regional de Salud, Valladolid, Spain
| | - Jesus F. Bermejo-Martín
- Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
| | - Andrea Domínguez-Martín
- Primary Care Research Unit of Salamanca (APISAL), Salamanca Primary Care Management, Salamanca, Spain
- Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
- Castilla and León Health Service–SACYL, Gerencia Regional de Salud, Valladolid, Spain
| | - José A. Martín-Oterino
- Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
- Castilla and León Health Service–SACYL, Gerencia Regional de Salud, Valladolid, Spain
- Hospital Universitario de Salamanca, Internal Medicine Department, Salamanca, Spain
- Department of Biomedical and Diagnostic Sciences, University of Salamanca, Salamanca, Spain
| | - José I. Martín-González
- Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
- Castilla and León Health Service–SACYL, Gerencia Regional de Salud, Valladolid, Spain
- Hospital Universitario de Salamanca, Internal Medicine Department, Salamanca, Spain
- Department of Biomedical and Diagnostic Sciences, University of Salamanca, Salamanca, Spain
| | - David González-Calle
- Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
- Castilla and León Health Service–SACYL, Gerencia Regional de Salud, Valladolid, Spain
- Department of Biomedical and Diagnostic Sciences, University of Salamanca, Salamanca, Spain
- Hospital Universitario de Salamanca, Cardiology Department, Salamanca, Spain
| | - Ángel García-García
- Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
- Castilla and León Health Service–SACYL, Gerencia Regional de Salud, Valladolid, Spain
- Department of Biomedical and Diagnostic Sciences, University of Salamanca, Salamanca, Spain
- Hospital Universitario de Salamanca, Emergency Department, Salamanca, Spain
| | - Cristina Lugones-Sánchez
- Primary Care Research Unit of Salamanca (APISAL), Salamanca Primary Care Management, Salamanca, Spain
- Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
- Research Network on Chronicity, Primary Care and Health Promotion (RICAPPS), Salamanca, Spain
| | - Susana González-Sánchez
- Primary Care Research Unit of Salamanca (APISAL), Salamanca Primary Care Management, Salamanca, Spain
- Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
- Research Network on Chronicity, Primary Care and Health Promotion (RICAPPS), Salamanca, Spain
| | - Raquel Jiménez-Gómez
- Primary Care Research Unit of Salamanca (APISAL), Salamanca Primary Care Management, Salamanca, Spain
- Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
- Castilla and León Health Service–SACYL, Gerencia Regional de Salud, Valladolid, Spain
| | - Luis García-Ortiz
- Primary Care Research Unit of Salamanca (APISAL), Salamanca Primary Care Management, Salamanca, Spain
- Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
- Research Network on Chronicity, Primary Care and Health Promotion (RICAPPS), Salamanca, Spain
- Castilla and León Health Service–SACYL, Gerencia Regional de Salud, Valladolid, Spain
- Department of Biomedical and Diagnostic Sciences, University of Salamanca, Salamanca, Spain
| | - Manuel A. Gómez-Marcos
- Primary Care Research Unit of Salamanca (APISAL), Salamanca Primary Care Management, Salamanca, Spain
- Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
- Research Network on Chronicity, Primary Care and Health Promotion (RICAPPS), Salamanca, Spain
- Castilla and León Health Service–SACYL, Gerencia Regional de Salud, Valladolid, Spain
- Department of Medicine, University of Salamanca, Salamanca, Spain
| | - Elena Navarro-Matías
- Primary Care Research Unit of Salamanca (APISAL), Salamanca Primary Care Management, Salamanca, Spain
- Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
- Castilla and León Health Service–SACYL, Gerencia Regional de Salud, Valladolid, Spain
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Coscia F, Di Filippo ES, Gigliotti PV, Fano Illic G. Effect of physical activity on long COVID fatigue: an unsolved enigma. Eur J Transl Myol 2023; 33:11639. [PMID: 37667865 PMCID: PMC10583148 DOI: 10.4081/ejtm.2023.11639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 08/19/2023] [Indexed: 09/06/2023] Open
Abstract
Covid-19 disease is well documented and often the most common symptoms include myalgia and muscle fatigue. Approximately 10% of those infected complain of persistent fatigue even many months after the end of the acute phase of the disease. This gives rise to a condition different from the previous one and commonly known as 'post-acute COVID-19 syndrome' or simply Long-COVID. Although the origin of muscle fatigue is multifactorial, the state of prolonged fatigue observed in the Long-COVID syndrome suggests the existence of a possible state of atrophy or rather acute sarcopenia. Under these conditions, the use of physical activity programs can effectively counteract the state of atrophy underlying the fatigue phenomena observed. If this is also the situation during the Long-COVID, the muscular symptom should be positively influenced by the administration of programmed physical activity cycles. In fact, in patients with Long-COVID, the few published papers seem to indicate that patients who are physically active and who make an effort to engage in physical activity even during the illness have decreased duration and intensity of the illness. However, analysis of the studies in the literature also suggests that a small percentage of people with Long-COVID do not appear to benefit from the application of physical activity programs, so further studies on homogeneous samples are needed to provide a firm answer to the question: can planned physical activity help patients during the pathological course of Long-COVID?
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Affiliation(s)
- Francesco Coscia
- Sports Medicine Service of the San Candido-Innichen and Brunico-Bruneck Hospitals, Bolzano-Bozen, San Candido.
| | - Ester Sara Di Filippo
- Department of Neuroscience Imaging and Clinical Sciences, University "G. d'Annunzio" of Chieti-Pescara, Chieti, Italy; IIM-Interuniversity Institute of Myology, University "G. d'Annunzio" of Chieti-Pescara, Chieti.
| | | | - Giorgio Fano Illic
- IIM-Interuniversity Institute of Myology, University "G. d'Annunzio" of Chieti-Pescara, Chieti, Italy; Campus of Free University of Alcatraz, Free University of Alcatraz, Santa Cristina di Gubbio, Gubbio, Italy; A&C M-C Foundation for Translational Myology, Padova.
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Babicki M, Kapusta J, Pieniawska-Śmiech K, Kałuzińska-Kołat Ż, Kołat D, Mastalerz-Migas A, Jankowski P, Chudzik M. Do COVID-19 Vaccinations Affect the Most Common Post-COVID Symptoms? Initial Data from the STOP-COVID Register-12-Month Follow-Up. Viruses 2023; 15:1370. [PMID: 37376668 DOI: 10.3390/v15061370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 06/09/2023] [Accepted: 06/11/2023] [Indexed: 06/29/2023] Open
Abstract
Around the world, various vaccines have been developed to prevent the SARS-CoV-2 virus infection and consequently the COVID-19 disease. However, many patients continue to report persistent symptoms after the acute phase. Since gathering scientific information on long COVID and post-COVID syndrome has become an urgent issue, we decided to investigate them in relation to the vaccination status of patients from the STOP-COVID registry. In this retrospective study, we analyzed data from the medical visit after contraction of COVID-19 and follow-up visits in the 3rd and 12th month after the disease. In total, 801 patients were included in the analysis. The most frequent complaints after 12 months included deterioration of exercise tolerance (37.5%), fatigue (36.3%), and memory/concentration difficulties (36.3%). In total, 119 patients declared that they had been diagnosed with at least one new chronic disease since the end of isolation, and 10.6% required hospitalization. The analysis of individual symptoms revealed that headache (p = 0.001), arthralgia (p = 0.032), and dysregulation of hypertension (p = 0.030) were more common in unvaccinated patients. Considering headache and muscle pain, people vaccinated after the disease manifested these symptoms less frequently. Subsequent research is needed to consider vaccines as a preventive factor for post-COVID syndrome.
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Affiliation(s)
- Mateusz Babicki
- Department of Family Medicine, Wroclaw Medical University, 51-141 Wroclaw, Poland
| | - Joanna Kapusta
- Department of Internal Diseases, Rehabilitation and Physical Medicine, Medical University of Lodz, 90-647 Lodz, Poland
| | - Karolina Pieniawska-Śmiech
- Department of Immunology and Pediatrics, The J. Gromkowski Provincial Specialist Hospital, 51-149 Wroclaw, Poland
- Department of Clinical Immunology, Wroclaw Medical University, 50-368 Wroclaw, Poland
| | - Żaneta Kałuzińska-Kołat
- Department of Experimental Surgery, Medical University of Lodz, 90-136 Lodz, Poland
- Boruta Medical Center, 95-100 Zgierz, Poland
| | - Damian Kołat
- Department of Experimental Surgery, Medical University of Lodz, 90-136 Lodz, Poland
- Boruta Medical Center, 95-100 Zgierz, Poland
| | | | - Piotr Jankowski
- Department of Internal Medicine and Geriatric Cardiology, Medical Centre for Postgraduate Education, 01-813 Warsaw, Poland
| | - Michał Chudzik
- Department of Internal Medicine and Geriatric Cardiology, Medical Centre for Postgraduate Education, 01-813 Warsaw, Poland
- Department of Nephrology, Hypertension and Family Medicine, Medical University of Lodz, 90-549 Lodz, Poland
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