1
|
Yoshimura Y, Wakabayashi H, Nagano F, Matsumoto A, Shimazu S, Shiraishi A, Kido Y, Bise T, Kuzuhara A, Hori K, Hamada T, Yoneda K, Maekawa K. Hyponatremia as a predictor of cognitive deterioration in hospitalized post-stroke patients. J Clin Neurosci 2024; 124:115-121. [PMID: 38703471 DOI: 10.1016/j.jocn.2024.04.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 04/07/2024] [Accepted: 04/29/2024] [Indexed: 05/06/2024]
Abstract
PURPOSE Evidence is scarce regarding the association between hyponatremia and alterations in cognitive function among hospitalized older patients. We aimed to investigate the associations between hyponatremia and the baseline cognitive status, as well as the improvement in cognitive function, in hospitalized post-stroke patients. METHODS This retrospective cohort study included consecutive hospitalized post-stroke patients. Serum sodium concentrations were extracted from medical records based on blood tests performed within 24 h of admission, with hyponatremia defined as a serum sodium concentration < 135 mEq/L. The main outcomes included admission and discharge scores for cognitive levels, assessed through the cognitive domain of the Functional Independence Measure (FIM-cognition), as well as the score changes observed during the hospitalization period. Multivariate linear regression analyses were used to determine the association between hyponatremia and outcomes of interest, adjusted for potential confounders. RESULTS Data from 955 patients (mean age 73.2 years; 53.6 % men) were included in the analysis. The median baseline blood sodium level was 139 [137, 141], and 84 patients (8.8 %) exhibited hyponatremia. After full adjustment for confounders, the baseline hyponatremia was significantly and negatively associated with FIM-cognition values at admission (β = -0.009, p = 0.016), discharge (β = -0.038, p = 0.043), and the gain during hospital stay (β = -0.040, p = 0.011). CONCLUSION Baseline hyponatremia has demonstrated a correlation with decline in cognitive level over the course of rehabilitation in individuals after stroke. Assessing hyponatremia at the outset proves to be a pivotal prognostic indicator.
Collapse
Affiliation(s)
- Yoshihiro Yoshimura
- Center for Sarcopenia and Malnutrition Research, Kumamoto Rehabilitation Hospital, Kumamoto 869-1106, Japan.
| | - Hidetaka Wakabayashi
- Department of Rehabilitation Medicine, Tokyo Women's Medical University Hospital, Tokyo 162-8666, Japan
| | - Fumihiko Nagano
- Center for Sarcopenia and Malnutrition Research, Kumamoto Rehabilitation Hospital, Kumamoto 869-1106, Japan
| | - Ayaka Matsumoto
- Center for Sarcopenia and Malnutrition Research, Kumamoto Rehabilitation Hospital, Kumamoto 869-1106, Japan
| | - Sayuri Shimazu
- Center for Sarcopenia and Malnutrition Research, Kumamoto Rehabilitation Hospital, Kumamoto 869-1106, Japan
| | - Ai Shiraishi
- Center for Sarcopenia and Malnutrition Research, Kumamoto Rehabilitation Hospital, Kumamoto 869-1106, Japan
| | - Yoshifumi Kido
- Center for Sarcopenia and Malnutrition Research, Kumamoto Rehabilitation Hospital, Kumamoto 869-1106, Japan
| | - Takahiro Bise
- Center for Sarcopenia and Malnutrition Research, Kumamoto Rehabilitation Hospital, Kumamoto 869-1106, Japan
| | - Aomi Kuzuhara
- Center for Sarcopenia and Malnutrition Research, Kumamoto Rehabilitation Hospital, Kumamoto 869-1106, Japan
| | - Kota Hori
- Center for Sarcopenia and Malnutrition Research, Kumamoto Rehabilitation Hospital, Kumamoto 869-1106, Japan
| | - Takenori Hamada
- Center for Sarcopenia and Malnutrition Research, Kumamoto Rehabilitation Hospital, Kumamoto 869-1106, Japan
| | - Kouki Yoneda
- Center for Sarcopenia and Malnutrition Research, Kumamoto Rehabilitation Hospital, Kumamoto 869-1106, Japan
| | - Kenichiro Maekawa
- Center for Sarcopenia and Malnutrition Research, Kumamoto Rehabilitation Hospital, Kumamoto 869-1106, Japan
| |
Collapse
|
2
|
Pelouto A, Reimer J, Hoorn EJ, Zandbergen AAM, den Hertog HM. Hyponatremia is associated with unfavorable outcomes after reperfusion treatment in acute ischemic stroke. Eur J Neurol 2024; 31:e16156. [PMID: 38015439 PMCID: PMC11236033 DOI: 10.1111/ene.16156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/28/2023] [Accepted: 10/31/2023] [Indexed: 11/29/2023]
Abstract
BACKGROUND AND PURPOSE In patients with acute ischemic stroke, hyponatremia (plasma sodium < 136 mmol/L) is common and associated with unfavorable outcomes. However, data are limited for patients who underwent intravenous thrombolysis (IVT) and/or endovascular thrombectomy (EVT). Therefore, our aim was to assess the impact of hyponatremia on postreperfusion outcomes. METHODS We analyzed data of consecutive patients who presented with acute ischemic stroke and were treated with IVT and/or EVT at Isala Hospital, the Netherlands, in 2019 and 2020. The primary outcome measure was the adjusted common odds ratio (acOR) for a worse modified Rankin Scale (mRS) score at 3-month follow-up. Secondary outcomes included symptomatic intracranial hemorrhage, in-hospital mortality, infarct core, and penumbra volumes. RESULTS Of the 680 patients (median age = 73 years, 49% female, median National Institutes of Health Stroke Scale = 5), 430 patients (63%) were treated with IVT, 120 patients (18%) with EVT, and 130 patients (19%) with both. Ninety-two patients (14%) were hyponatremic on admission. Hyponatremia was associated with a worse mRS score at 3 months (acOR = 1.76, 95% confidence interval [CI] = 1.12-2.76) and in-hospital mortality (aOR = 2.39, 95% CI = 1.23-4.67), but not with symptomatic intracranial hemorrhage (OR = 1.17, 95% CI = 0.39-3.47). Hyponatremia was also associated with a larger core (17.2 mL, 95% CI = 2.9-31.5) and core to penumbra ratio (55.0%, 95% CI = 7.1-102.9). CONCLUSIONS Admission hyponatremia in patients with acute ischemic stroke treated with IVT and/or EVT was independently associated with unfavorable postreperfusion outcomes, a larger infarct core, and a larger core to penumbra ratio. Future studies should address whether correction of hyponatremia improves the prognosis.
Collapse
Affiliation(s)
- Anissa Pelouto
- Department of Internal Medicine, Erasmus Medical CenterUniversity Medical Center RotterdamRotterdamthe Netherlands
| | - Jorieke Reimer
- Department of NeurologyMedisch Spectrum TwenteEnschedethe Netherlands
| | - Ewout J. Hoorn
- Department of Internal Medicine, Erasmus Medical CenterUniversity Medical Center RotterdamRotterdamthe Netherlands
| | - Adrienne A. M. Zandbergen
- Department of Internal Medicine, Erasmus Medical CenterUniversity Medical Center RotterdamRotterdamthe Netherlands
| | | |
Collapse
|
3
|
Barkas F, Anastasiou G, Liamis G, Milionis H. A step-by-step guide for the diagnosis and management of hyponatraemia in patients with stroke. Ther Adv Endocrinol Metab 2023; 14:20420188231163806. [PMID: 37033701 PMCID: PMC10074625 DOI: 10.1177/20420188231163806] [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: 10/02/2022] [Accepted: 02/27/2023] [Indexed: 04/07/2023] Open
Abstract
Hyponatraemia is common in patients with stroke and associated with adverse outcomes and increased mortality risk. The present review presents the underlying causes and provides a thorough algorithm for the diagnosis and management of hyponatraemia in stroke patients. Concomitant diseases and therapies, such as diabetes, chronic kidney disease and heart failure, along with diuretics, antidepressants and proton pump inhibitors are the most common causes of hyponatraemia in community. In the setting of acute stroke, the emergence of hyponatraemia might be attributed to the administration of hypotonic solutions and drugs (ie. mannitol and antiepileptics), poor solute intake, infections, as well as stroke-related conditions or complications, such as the syndrome of inappropriate secretion of antidiuretic hormone, cerebral salt wasting syndrome and secondary adrenal insufficiency. Diagnostically, the initial step is to differentiate hypotonic from non-hypotonic hyponatraemia, usually caused by hyperglycaemia or recent mannitol administration in patients with stroke. Determining urine osmolality, urine sodium level and volume status are the following steps in the differentiation of hypotonic hyponatraemia. Of note, specific parameters, such as fractional uric acid and urea excretion, along with plasma copeptin concentration, may further improve the diagnostic yield. Therapeutic options are based on the duration and symptoms of hyponatremia. In the case of acute or symptomatic hyponatraemia, hypertonic saline administration is recommended. Hypovolaemic chronic hyponatremia is treated with isotonic solution administration. Although fluid restriction remains the first-line treatment for the rest forms of chronic hyponatraemia, therapies increasing renal free water excretion may be necessary. Loop diuretics and urea serve this purpose in patients with stroke, whereas sodium-glucose transport protein-2 inhibitors appear to be a promising therapy. Nevertheless, it is yet unclear whether the appropriate restoration of sodium level improves outcomes in such patients. Randomized trials designed to compare therapeutic strategies in managing hyponatraemia in patients with stroke are required.
Collapse
Affiliation(s)
- Fotios Barkas
- Department of Hygiene and Epidemiology, Faculty of
Medicine, School of Health Sciences, University of Ioannina, Ioannina, Greece
| | - Georgia Anastasiou
- Department of Internal Medicine, Faculty of Medicine,
School of Health Sciences, University of Ioannina, Ioannina, Greece
| | - George Liamis
- Department of Internal Medicine, Faculty of Medicine,
School of Health Sciences, University of Ioannina, Ioannina, Greece
| | | |
Collapse
|
4
|
He L, Guo ZN, Qu Y, Jin H. Hyponatremia Is Associated With Post-thrombolysis Hemorrhagic Transformation and Poor Clinical Outcome in Ischemic Stroke Patients. Front Mol Neurosci 2022; 15:879863. [PMID: 35923753 PMCID: PMC9341483 DOI: 10.3389/fnmol.2022.879863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 03/21/2022] [Indexed: 11/13/2022] Open
Abstract
ObjectiveHyponatremia is the most common electrolyte disorder encountered in patients with neurological conditions, such as stroke. Studies have shown that it is associated with worse clinical outcomes and increased mortality in acute ischemic stroke (AIS). However, the role of hyponatremia has not been elucidated in patients with AIS who received intravenous thrombolysis (IVT) therapy. Therefore, this study aimed to investigate the effect of serum sodium levels on the clinical outcome and hemorrhagic transformation (HT) in patients with AIS who received thrombolytic therapy.MethodsPatients diagnosed with AIS who received IVT therapy between May 2015 and December 2020 were included in this study. All patients were screened for serum sodium levels immediately after hospital admission, before IVT therapy. The occurrence of HT was evaluated using computed tomography (CT) 24 ± 2 h after thrombolysis. Then, 3-month clinical outcomes were obtained by telephone calls or outpatient visits, and poor 3-month clinical outcomes were defined as modified Rankin Scale scores ≥3. The effects of serum sodium levels on the clinical outcome and HT were assessed using the multivariate logistic regression analysis.ResultsOf the 963 included patients, 82 (8.5%) had hyponatremia, 157 (16.3%) developed HT, and 333 (34.6%) had poor 3-month outcomes. Of the 82 patients with hyponatremia, 21 (25.6%) developed HT, and 39 (47.6%) had poor 3-month outcomes. Patients with hyponatremia had a higher incidence of post-thrombolysis HT (25.6 vs. 15.4%, p = 0.017) and worse clinical outcome (47.6 vs. 33.4%, p = 0.01) than those with normal serum sodium levels. Patients had significantly lower serum sodium levels in those with HT [138.4 (136.4–140.3, IQR) vs. 139.0 (137.2–140.7, IQR) mmol/L, p = 0.019] and poor 3 month outcome [139.0 (137.2–140.7) vs. 138.4 (136.7–140.3) mmol/L, p = 0.005] than those without. After adjusting for major covariates, the multivariate logistic regression analysis revealed that lower serum sodium levels were independently associated with an increased risk of HT [odds ratio (OR) = 1.804; 95% CI: 1.048–3.105] and poor 3-month outcome (OR = 1.647; 95% CI: 1.012–2.679).ConclusionLower serum sodium level was an independent risk factor for post-thrombolysis HT and poor clinical outcome in patients with AIS who received thrombolytic therapy.
Collapse
Affiliation(s)
- Ling He
- Stroke Center, The First Hospital of Jilin University, Changchun, China
| | - Zhen-Ni Guo
- Stroke Center, The First Hospital of Jilin University, Changchun, China
- Department of Neurology, Stroke Center, Clinical Trial and Research Center for Stroke, The First Hospital of Jilin University, Changchun, China
| | - Yang Qu
- Stroke Center, The First Hospital of Jilin University, Changchun, China
| | - Hang Jin
- Stroke Center, The First Hospital of Jilin University, Changchun, China
- *Correspondence: Hang Jin,
| |
Collapse
|
5
|
Potasso L, Refardt J, De Marchis GM, Wiencierz A, Wright PR, Wagner B, Dittrich T, Polymeris AA, Gensicke H, Bonati LH, Christ-Crain M. Impact of Sodium Levels on Functional Outcomes in Patients With Stroke - A Swiss Stroke Registry Analysis. J Clin Endocrinol Metab 2022; 107:e672-e680. [PMID: 34480576 DOI: 10.1210/clinem/dgab650] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Indexed: 11/19/2022]
Abstract
CONTEXT Correction of hyponatremia might represent an additional treatment for improving stroke patients' clinical outcomes. OBJECTIVE Admission hyponatremia is associated with worse clinical outcome in stroke patients, but whether normalization of hyponatremia improves outcome is unknown. We investigated whether normalization of hyponatremia affects patients' disability, mortality, and stroke recurrence within 3 months; length of hospitalization; and discharge destination. DESIGN This was a registry-based analysis of data collected between January 2016 and December 2018. We linked data from Swiss Stroke Registry (SSR) with electronic patients' records for extracting sodium values. SETTING We analyzed data of hospitalized patients treated at University Hospital of Basel. PATIENTS Stroke patients whose data and informed consent were available. MAIN OUTCOME MEASURE Modified Rankin Scale (mRS) score at 3 months. The tested hypothesis was formulated after SSR data collection but before linkage with electronic patients' records. RESULTS Of 1995 patients, 144 (7.2%) had hyponatremia on admission; 102 (70.8%) reached normonatremia, and 42 (29.2%) remained hyponatremic at discharge. An increase of initial sodium was associated with better functional outcome at 3 months (odds ratio [OR] 0.94; 95% CI, 0.90-0.99, for a shift to higher mRS per 1 mmol/L sodium increase). Compared with normonatremic patients, patients who remained hyponatremic at discharge had a worse functional outcome at 3 months (odds ratio 2.46; 95% CI, 1.20-5.03, for a shift to higher mRS). No effect was found on mortality, recurrence, or length of hospitalization. CONCLUSIONS In hospitalized acute stroke patients, persistent hyponatremia is associated with worse functional outcome. Whether active correction of hyponatremia improves outcome remains to be determined in prospective studies.
Collapse
Affiliation(s)
- Laura Potasso
- Departments of Endocrinology, Diabetology and Metabolism, University Hospital of Basel, 4031 Basel, Switzerland
- Department of Clinical Research, University of Basel, 4031 Basel, Switzerland
| | - Julie Refardt
- Departments of Endocrinology, Diabetology and Metabolism, University Hospital of Basel, 4031 Basel, Switzerland
- Department of Clinical Research, University of Basel, 4031 Basel, Switzerland
| | - Gian Marco De Marchis
- Department of Neurology and Stroke Center, University Hospital of Basel, 4031 Basel, Switzerland
| | - Andrea Wiencierz
- Department of Clinical Research, University of Basel, 4031 Basel, Switzerland
| | - Patrick R Wright
- Department of Clinical Research, University of Basel, 4031 Basel, Switzerland
| | - Benjamin Wagner
- Department of Neurology and Stroke Center, University Hospital of Basel, 4031 Basel, Switzerland
| | - Tolga Dittrich
- Department of Neurology and Stroke Center, University Hospital of Basel, 4031 Basel, Switzerland
| | - Alexandros A Polymeris
- Department of Neurology and Stroke Center, University Hospital of Basel, 4031 Basel, Switzerland
| | - Henrik Gensicke
- Department of Neurology and Stroke Center, University Hospital of Basel, 4031 Basel, Switzerland
| | - Leo H Bonati
- Department of Neurology and Stroke Center, University Hospital of Basel, 4031 Basel, Switzerland
| | - Mirjam Christ-Crain
- Departments of Endocrinology, Diabetology and Metabolism, University Hospital of Basel, 4031 Basel, Switzerland
- Department of Clinical Research, University of Basel, 4031 Basel, Switzerland
| |
Collapse
|
6
|
Yuen KCJ, Sharf V, Smith E, Kim M, Yuen ASM, MacDonald PR. Sodium and water perturbations in patients who had an acute stroke: clinical relevance and management strategies for the neurologist. Stroke Vasc Neurol 2021; 7:258-266. [PMID: 34969834 PMCID: PMC9240457 DOI: 10.1136/svn-2021-001230] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 11/26/2021] [Indexed: 12/17/2022] Open
Abstract
Sodium and water perturbations, manifesting as hyponatraemia and hypernatraemia, are common in patients who had an acute stroke, and are associated with worse outcomes and increased mortality. Other non-stroke-related causes of sodium and water perturbations in these patients include underlying comorbidities and concomitant medications. Additionally, hospitalised patients who had an acute stroke may receive excessive intravenous hypotonic solutions, have poor fluid intake due to impaired neurocognition and consciousness, may develop sepsis or are administered drugs (eg, mannitol); factors that can further alter serum sodium levels. Sodium and water perturbations can also be exacerbated by the development of endocrine consequences after an acute stroke, including secondary adrenal insufficiency, syndrome of inappropriate antidiuretic hormone secretion and diabetes insipidus. Recently, COVID-19 infection has been reported to increase the risk of development of sodium and water perturbations that may further worsen the outcomes of patients who had an acute stroke. Because there are currently no accepted consensus guidelines on the management of sodium and water perturbations in patients who had an acute stroke, we conducted a systematic review of the literature published in English and in peer-reviewed journals between January 2000 and December 2020, according to PRISMA guidelines, to assess on the current knowledge and clinical practices of this condition. In this review, we discuss the signs and symptoms of hyponatraemia and hypernatraemia, the pathogenesis of hyponatraemia and hypernatraemia, their clinical relevance, and we provide our recommendations for effective treatment strategies for the neurologist in the management of sodium and water perturbations in commonly encountered aetiologies of patients who had an acute stroke.
Collapse
Affiliation(s)
- Kevin C J Yuen
- Departments of Neuroendocrinology and Neurosurgery, Barrow Neurological Institute, Phoenix, Arizona, USA .,University of Arizona College of Medicine and Creighton School of Medicine, Phoenix, Arizona, USA
| | - Valerie Sharf
- University of Arizona College of Medicine and Creighton School of Medicine, Phoenix, Arizona, USA.,Department of Neurology, Barrow Neurological Institute, Phoenix, Arizona, USA
| | | | - Minhwan Kim
- Creighton University School of Medicine, Phoenix, Arizona, USA
| | | | - Paul R MacDonald
- University of Arizona College of Medicine and Creighton School of Medicine, Phoenix, Arizona, USA.,Department of Neurology, Barrow Neurological Institute, Phoenix, Arizona, USA
| |
Collapse
|
7
|
Malandrini S, Lava SAG, Bianchetti MG, Meani F, Faré PB, Camozzi P, Cugliari M, Agostoni C, Milani GP. Which laboratory technique is used for the blood sodium analysis in clinical research? A systematic review. Clin Chem Lab Med 2021; 59:1501-1506. [PMID: 33915610 DOI: 10.1515/cclm-2021-0293] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 04/19/2021] [Indexed: 11/15/2022]
Abstract
BACKGROUND Circulating sodium is analyzed by flame spectrometry and indirect or direct potentiometry. The differences between estimates returned by the three techniques are often relevant. It is unknown whether peer-reviewed international publications focusing on this parameter provide information about the technique. Objectives of the study were to ascertain if information about the employed technique is provided. CONTENT A search in the National Library of Medicine for articles whose title contains "hyponatr[a]emia" was performed. We restricted the search to clinical reports including 10 or more humans published in the 2013-2015 and 2017-2019 periods. Authors of papers not reporting the technique were contacted to obtain this information. The study design and journal quartile ranking of each article were also evaluated. SUMMARY For the final analysis, we included 361 articles (2013-2015, n=169; 2017-2019, n=192). Information about the laboratory technique was given in 61(17%) articles. Thanks to our inquiry, we collected this information for 116(32%) further reports. Indirect potentiometry was the most frequently used technique, followed by direct potentiometry. Spectrometry was used in a small minority of studies. Study design, journal ranking and study period did not modulate the mentioned frequency. OUTLOOK Most articles focusing on hyponatremia do not provide information on the laboratory technique. This parameter is nowadays analyzed by indirect or, less frequently, direct potentiometry. The figures are similar for high and low impact factor journals and for the 2013-2015 and the 2017-2019 periods. Many authors, reviewers and editors likely assume that the results of this parameter are not influenced by the technique.
Collapse
Affiliation(s)
- Sabrina Malandrini
- Family Medicine Institute, Faculty of Biomedical Science, Università della Svizzera italiana, Lugano, Switzerland.,Department of Internal Medicine, Ente Ospedaliero Cantonale, Lugano, Switzerland
| | - Sebastiano A G Lava
- Department of Pediatrics, Pediatric Cardiology Unit, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Mario G Bianchetti
- Family Medicine Institute, Faculty of Biomedical Science, Università della Svizzera italiana, Lugano, Switzerland.,Pediatric Institute of Southern Switzerland, Ente Ospedaliero Cantonale, Bellinzona, Switzerland
| | - Francesco Meani
- Department of Gynecology and Obstetrics, Centro di Senologia della Svizzera Italiana, Ente Ospedaliero Cantonale, Lugano, Switzerland
| | - Pietro B Faré
- Infectious Diseases Unit, Ente Ospedaliero Cantonale, Bellinzona, Switzerland
| | - Pietro Camozzi
- Department of Internal Medicine, Ente Ospedaliero Cantonale, Bellinzona, Switzerland
| | - Marco Cugliari
- Pediatric Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Carlo Agostoni
- Pediatric Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Gregorio P Milani
- Pediatric Institute of Southern Switzerland, Ente Ospedaliero Cantonale, Bellinzona, Switzerland.,Pediatric Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| |
Collapse
|