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Schäfer R, Wiskirchen J, Guo K, Neumann B, Kehlbach R, Pintaske J, Voth V, Walker T, Scheule AM, Greiner TO, Hermanutz-Klein U, Claussen CD, Northoff H, Ziemer G, Wendel HP. Aptamer-based isolation and subsequent imaging of mesenchymal stem cells in ischemic myocard by magnetic resonance imaging. ROFO-FORTSCHR RONTG 2007; 179:1009-15. [PMID: 17879173 DOI: 10.1055/s-2007-963409] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
PURPOSE Mesenchymal stem cells (MSC) seem to be a promising cell source for cellular cardiomyoplasty. We recently developed a new aptamer-based specific selection of MSC to provide "ready to transplant" cells directly after isolation. We evaluated MRI tracking of newly isolated and freshly transplanted MSC in the heart using one short ex vivo selection step combining specific aptamer-based isolation and labeling of the cells. MATERIALS AND METHODS Bone marrow (BM) was collected from healthy pigs. The animals were euthanized and the heart was placed in a perfusion model. During cold ischemia, immunomagnetic isolation of MSC from the BM by MSC-specific aptamers labeled with Dynabeads was performed within 2 h. For histological identification the cells were additionally stained with PKH26. Approx. 3 x 10(6) of the freshly aptamer-isolated cells were injected into the ramus interventricularis anterior (RIVA) and 5 x 10(5) cells were injected directly into myocardial tissue after damaging the respective area by freezing (cryo-scar). 3 x 10(6) of the aptamer-isolated cells were kept for further characterization (FACS and differentiation assays). 20 h after cell transplantation, MRI of the heart using a clinical 3.0 Tesla whole body scanner (Magnetom Trio, Siemens, Germany) was performed followed by histological examinations. RESULTS The average yield of sorted cells from 120 ml BM was 7 x 10(6) cells. The cells were cultured and showed MSC-like properties. MRI showed reproducible artifacts within the RIVA-perfusion area and the cryo-scar with surprisingly excellent quality. The histological examination of the biopsies showed PKH26-positive cells within the areas which were positive in the MRI in contrast to the control biopsies. CONCLUSION Immunomagnetic separation of MSC by specific aptamers linked to magnetic particles is feasible, effective and combines a specific separation and labeling technique to a "one stop shop" strategy.
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Schäfer R, Dominici M, Müller I, Dazzi F, Bieback K, Godthardt K, Le Blanc K, Meisel R, Pochampally R, Richter R, Skutella T, Steinhoff G, Mitterberger M, Wendel H, Wiskirchen J, Handgretinger R, Northoff H. Progress in characterization, preparation and clinical applications of non-hematopoietic stem cells, 29-30 September 2006, Tübingen, Germany. Cytotherapy 2007; 9:397-405. [PMID: 17573615 DOI: 10.1080/14653240701392949] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Sievert KD, Feil G, Renninger M, Selent C, Maurer S, Conrad S, Hennenlotter J, Nagele U, Schäfer R, Möhle R, Skutella T, Northoff H, Seibold J, Stenzl A. „Tissue engineering“ und Stammzellforschung in der Urologie für den rekonstruktiven bzw. regenerativen Therapieansatz. Urologe A 2007; 46:1224-30. [PMID: 17701156 DOI: 10.1007/s00120-007-1486-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
With the involvement of clinical reconstructive urology in the field of tissue engineering, outstanding results have been achieved in basic research as well as in some clinics. Stem cell research has even opened up possibilities for regenerative aspects. In close cooperation with various disciplines, the Department of Urology at the University of Tübingen investigates different clinical aspects with regard to reconstructive and regenerative urology. The regeneration of the external urethral sphincter requires functionally integrated muscle cells. In addition stricture reconstruction with multilayer urothelium should become less invasive and the re-stricture rate reduced. After the application of differentiating stem cells was proven, the clinical setting needed to be set for legal issues. In addition to the specification of culture media and verification in the animal model, the possibility to harvest omnipotent stem cells out of human testis and to differentiate those into the three germ layers was demonstrated. With the reduced invasiveness of harvesting the urothelium cells by a bladder wash using specific culture fluids, the cell culture was significantly improved enabling successful creation of urothelium by stratification. In addition urothelial cells in a matrix are further improved for endoscopic application. The close cooperation of different disciplines shortens the time to develop therapeutic approaches with a close clinical relationship in reconstructive and regenerative urology.
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Aharinejad S, Schäfer R, Krenn K, Zuckermann A, Schneider B, Neumann F, Paulus P, Wieselthaler G, Wolner E, Grimm M. Donor myocardial HIF-1alpha is an independent predictor of cardiac allograft dysfunction: a 7-year prospective, exploratory study. Am J Transplant 2007; 7:2012-9. [PMID: 17617866 DOI: 10.1111/j.1600-6143.2007.01875.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Knowledge on interplay between the cardiac molecular response to transplantation-induced stress and primary graft dysfunction (PGD) is limited. A cDNA array identified HIF-1, EGR-1, NAB-2, VEGF-A and uPA as mediators of cardiac tissue response to transplantation-induced stress. mRNA expression of these molecules was measured in left ventricular biopsies from 200 donors before and after aortic cross-clamping and at 10-, 30- and 60-min reperfusion by real-time RT-PCR. HIF-1alpha expression at two time points was significantly associated with PGD, as shown by univariate analysis, receiver operating characteristic curve and multivariate logistic regression. At a cut-off level of 200 arbitrary units, HIF-1alpha after aortic cross-clamping in donors (78% sensitivity, 83% specificity) and at 10-min reperfusion (85% sensitivity, 83% specificity) identified PGD. HIF-1alpha demonstrates the potential to be a predictive marker for PGD; however, as multiple factors were tested at different time points, prospective evaluation is clearly necessary to confirm this observation.
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Schwarzkopf K, Hüter L, Preussler NP, Schäfer R, Schreiber T. Präklinische transtracheale Notfallventilation. Anaesthesist 2007; 56:1115-9. [PMID: 17639282 DOI: 10.1007/s00101-007-1233-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Prehospital transtracheal ventilation via a needle cricothyroidotomy may be lifesaving in cannot-intubate-cannot-ventilate situations. A self-made device consisting of a three-way stopcock placed between a transtracheal airway catheter and an oxygen supply was constructed and the effectiveness of the device was compared with a hand-triggered emergency jet generator in animal experiments. MATERIALS AND METHODS An emergency transtracheal airway catheter was inserted into the trachea of 10 anesthetized pigs (18-35 kgbw) and a situation of partial expiratory airway obstruction was established. All pigs were ventilated in a randomized order via the transtracheal airway catheter with the hand-triggered emergency jet injector and the self-made device for 15 min each. RESULTS With both devices satisfactory oxygenation and ventilation was achieved in all animals. CONCLUSIONS The efficacy of the self-made device during the experiment was comparable with the efficacy of the hand-triggered emergency jet injector.
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Franz M, Gertheinrichs T, Güttgemanns J, Haubold S, Rentsch D, Schäfer R. PALME – a structured attachment oriented parental training for depressive single mothers. First results of a controlled randomized intervention study in an urban community. Psychother Psychosom Med Psychol 2007. [DOI: 10.1055/s-2007-970639] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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82
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Seitz RJ, Schäfer R, Wittsack HJ, Scherfeld D, Popp K, Franz M. Bedeutung des medialen Frontalkortex für die Selbstkontrolle des Verhaltens. AKTUELLE NEUROLOGIE 2007. [DOI: 10.1055/s-2007-987503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Schäfer R. Analyse der DRG-Einzelfallbearbeitung des Jahres 2005: Besteht ein Effekt für die Krankenkassen? DAS GESUNDHEITSWESEN 2006. [DOI: 10.1055/s-2006-948666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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85
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Abdul-Ghani R, Serra V, Györffy B, Jürchott K, Solf A, Dietel M, Schäfer R. The PI3K inhibitor LY294002 blocks drug export from resistant colon carcinoma cells overexpressing MRP1. Oncogene 2006; 25:1743-52. [PMID: 16288223 DOI: 10.1038/sj.onc.1209201] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Multidrug resistance may be achieved by the activation of membrane transporters, detoxification, alterations in DNA repair or failure in apoptotic pathways. Recent data have suggested an involvement of mitogenic signalling pathways mediated by Ras and phosphoinositol-3-kinase (PI3K/Akt) in controlling multidrug resistance. Since these pathways are important targets for therapeutic interference, we sought to investigate whether blocking effectors kinases by specific inhibitors would result in a sensitization toward cytotoxic drugs. We found that cotreatment of drug-resistant HT29RDB colon cancer cells with the topoisomerase inhibitor doxorubicin and the PI3K-inhibitor LY294002 resulted in massive apoptosis, while cotreatment with the Mek inhibitors PD98059 or U0126 had no effect. This suggested that the PI3K-pathways controls cell survival and drug resistance in these cells. Besides blocking Akt phosphorylation, the PI3K-inibitor increased the intracellular doxorubicin concentration threefold. LY294002 inhibits drug export in a competitive manner as revealed by measuring drug efflux in the presence and the absence of inhibitor. The efficacy of drug efflux inhibition by LY294002 was similar to that achieved by the MRP1 inhibitors MK571 and genistein. We conclude that the PI3K inhibitor LY294002 may have therapeutic potential when combined with doxorubicin in the treatment of MRP1-mediated drug resistance.
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Lund P, Weisshaupt K, Mikeska T, Jammas D, Chen X, Kuban RJ, Ungethüm U, Krapfenbauer U, Herzel HP, Schäfer R, Walter J, Sers C. Oncogenic HRAS suppresses clusterin expression through promoter hypermethylation. Oncogene 2006; 25:4890-903. [PMID: 16568090 DOI: 10.1038/sj.onc.1209502] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Silencing of gene expression by methylation of CpG islands in regulatory elements is frequently observed in cancer. However, an influence of the most common oncogenic signalling pathways onto DNA methylation has not yet been investigated thoroughly. To address this issue, we identified genes suppressed in HRAS-transformed rat fibroblasts but upregulated after treatment with the demethylating agent 5-Aza-2-deoxycytidine and with the MEK1,2 inhibitor U0126. Analysis of gene expression by microarray and Northern blot analysis revealed the MEK/ERK target genes clusterin, matrix metalloproteinase 2 (Mmp2), peptidylpropyl isomerase C-associated protein, syndecan 4, Timp2 and Thbs1 to be repressed in the HRAS-transformed FE-8 cells in a MEK/ERK- and methylation-dependent manner. Hypermethylation of putative regulatory elements in HRAS-transformed cells as compared to immortalized fibroblasts was detected within a CpG island 14.5 kb upstream of clusterin, within the clusterin promoter and within a CpG island of the Mmp2 promoter by bisulphite sequencing. Furthermore, hypermethylation of the clusterin promoter was observed 10 days after induction of HRAS in immortalized rat fibroblasts and a clear correlation between reduced clusterin expression and hypermethlyation could also be observed in distinct rat tissues. These results suggest that silencing of individual genes by DNA methylation is controlled by oncogenic signalling pathways, yet the mechanisms responsible for initial target gene suppression are variable.
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Franz M, Schäfer R, Gertheinrichs T, Thees R. Die psychosoziale Belastung alleinerziehender Mütter und ihrer Kinder – Ausprägung und Determinanten. PPMP - PSYCHOTHERAPIE · PSYCHOSOMATIK · MEDIZINISCHE PSYCHOLOGIE 2006. [DOI: 10.1055/s-2006-934249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Franz M, Sitte W, Popp K, Schneider C, Schäfer R. Ist die bei Alexithymen beeinträchtigte Erkennung affektiver Mimik auch im EEG nachweisbar? Psychother Psychosom Med Psychol 2006. [DOI: 10.1055/s-2006-934250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Kehlbach R, Schäfer R, Bantleon R, Maurer B, Pintaske J, Claussen CD, Schick F, Wiskirchen J. Änderung der Transferrinrezeptor-Expression von raMSC durch Beladung der Zellen mit Ferrit basierenden Kontrastmitteln. ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-941124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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91
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Mack A, Emran M, Schäfer R. Numerical Rebuilding of a Generic Body-Flap Model in an Arc Heated Facility. NEW RESULTS IN NUMERICAL AND EXPERIMENTAL FLUID MECHANICS V 2006:289-296. [DOI: 10.1007/978-3-540-33287-9_36] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Schäfer R, Stöckmann HJ, Gorin T, Seligman TH. Experimental verification of fidelity decay: from perturbative to fermi golden rule regime. PHYSICAL REVIEW LETTERS 2005; 95:184102. [PMID: 16383905 DOI: 10.1103/physrevlett.95.184102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2004] [Indexed: 05/05/2023]
Abstract
The scattering matrix was measured for a flat microwave cavity with classically chaotic dynamics. The system can be perturbed by small changes of the geometry. We define the "scattering fidelity" in terms of parametric correlation functions of scattering matrix elements. In chaotic systems and for weak coupling, the scattering fidelity approaches the fidelity of the closed system. Without free parameters, the experimental results agree with random matrix theory in a wide range of perturbation strengths, reaching from the perturbative to the Fermi golden rule regime.
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Tulapurkar ME, Schäfer R, Hanck T, Flores RV, Weisman GA, González FA, Reiser G. Endocytosis mechanism of P2Y2 nucleotide receptor tagged with green fluorescent protein: clathrin and actin cytoskeleton dependence. Cell Mol Life Sci 2005; 62:1388-99. [PMID: 15924261 PMCID: PMC11139135 DOI: 10.1007/s00018-005-5052-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Extracellular nucleotides exert a large number of physiological effects through activation of P2Y receptors. We expressed rat P2Y2 (rP2Y2) receptor, tagged with green fluorescent protein (GFP) in HEK-293 cells and visualized receptor translocation in live cells by confocal microscopy. Functional receptor expression was confirmed by determining [Ca2+]i responses. Agonist stimulation caused a time-dependent translocation of the receptor from the plasma membrane to the cytoplasm. Rearrangement of the actin cytoskeleton was observed during agonist-mediated rP2Y2-GFP receptor internalization. Colocalization of the internalized receptor with early endosomes, clathrin and lysosomes was detected by confocal microscopy. The inhibition of receptor endocytosis by either high-density medium or chlorpromazine in the presence of UTP indicates that the receptor was internalized by the clathrin-mediated pathway. The caveolin-mediated pathway was not involved. Targeting of the receptor from endosomes to lysosomes seems to involve the proteasome pathway, because proteasomal inhibition increased receptor recycling back to the plasma membrane.
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Sitte W, Schäfer R, Röper M, Franz M. Asymmetrische visuell ereigniskorrelierte Potenzialverläufe (vERPs) bei lateralisierter Präsentation von emotionaler und neutraler Gesichtsmimik und neutralen Alltagsgegenständen bei Hoch- und Niedrigalexithymen. Psychother Psychosom Med Psychol 2005. [DOI: 10.1055/s-2005-863559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Schäfer R, Schermuly R, Ardeschir Ghofrani H, Seeger W, Grimminger F, Weißmann N. Etablierung einer Technik zur Quantifizierung von Superoxid an isoliert perfundierten Mauslungen mittels Elektronenspinresonanz-Spektroskopie. Pneumologie 2005. [DOI: 10.1055/s-2005-862734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Schäfer R, Zweyer M, Knauf U, Mundegar RR, Wernig A. The ontogeny of soleus muscles in mdx and wild type mice. Neuromuscul Disord 2005; 15:57-64. [PMID: 15639122 DOI: 10.1016/j.nmd.2004.09.011] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2004] [Accepted: 09/13/2004] [Indexed: 11/17/2022]
Abstract
The satellite cell, the organotypic muscle stem cell, is the key element in ontogenetic and load induced muscle fibre growth and repair. It is therefore possible that the satellite pool becomes exhausted with age, especially in mdx mice where dystrophin deficiency results in skeletal muscle degeneration. We compared structural criteria and satellite cell frequencies in soleus muscles of 26 mdx and 23 wild type mice aged between 26 and 720 days. The total number of muscle fibres was similar in both groups and remained stable throughout life, except for an early increase in wild type mice. However, in mdx muscles there was always a proportion of small-diameter fibres which resulted in a reduction in the effective myogenic area on cross-section, whereas total cross-sectional area and muscle weights were increased relative to controls throughout life. In adult animals, the frequency and numbers of satellite cells remained stable with age and were similar in both animal groups. Satellite cell numbers showed some considerable variation between individual animals, although with a markedly smaller variability between results of the same animal, pointing to the satellite cell pool being an individual variant.
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Wolf HG, Schäfer R. [Assessment and outcome of perinatal and neonatal care in North Rhine area]. ZENTRALBLATT FUR GYNAKOLOGIE 2004; 126:341-54. [PMID: 15570548 DOI: 10.1055/s-2004-832367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The objective of the quality assurance program "Perinatalerhebung" and "Neonatalerhebung" is to ameliorate the perinatal and neonatal care in German hospitals. Standardised data defined by a team of experts in the early seventies are documented for more than 20 years in the North Rhine area. The documentation of more than 1.6 million deliveries created a data pool that served as a thesaurus for the improvement of medical care in obstetrical units. The same has been achieved for neonatal care on the documentation basis of more than 168,000 newborn infants admitted to a neonatal department. The results show that the approach to evaluate continuously the data monitored enables improvement in care. The support given is the anonymous collection of the documentation sheets/data sets and their evaluation by an expert committee. The results show that obstetrical management changed and the measurable results improved demonstrably. The efforts seem to be worthwhile in view of the fact that less than 1 % of the total cost of care has been spent for this project.
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Lauterbach FG, Posselt G, Schäfer R, Schnurpfeil D. Zur übergangsmetallkatalysierten nucleophilen Epoxidringöffnungsreaktion. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/prac.19813230115] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Müller T, Cox J, Peter W, Schäfer R, Johnson N, McElhinney LM, Geue JL, Tjørnehøj K, Fooks AR. Spill-over of European Bat Lyssavirus Type 1 into a Stone Marten (Martes foina) in Germany. ACTA ACUST UNITED AC 2004; 51:49-54. [PMID: 15030600 DOI: 10.1111/j.1439-0450.2003.00725.x] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
European bat lyssavirus type 1 (EBLV-1, genotype 5) is known to endemically circulate in insectivorous bat populations in Germany. In August 2001, a rabies suspect stone marten (Martes foina) was found in the city of Burg (Saxony-Anhalt, Germany) and was sent to the regional veterinary laboratory for routine rabies diagnosis. Whereas brain samples repeatedly tested negative in the fluorescent antibody test for classical rabies virus (genotype 1), the mouse inoculation test and the rabies tissue culture inoculation test yielded positive results. Rabies viral RNA was also detected in the stone marten brain sample both by nested and heminested RT-PCR specific for the nucleoprotein gene and for the nucleoprotein phosphoprotein junction of rabies virus. The amplification products were sequenced to genotype the isolate. Sequence data obtained from the first-round RT-PCR products were analysed and the suspect stone marten isolate was confirmed as a rabies related virus (EBLV-1a). Phylogenetic comparison with sequences from recent genotype five isolates from Germany and Denmark showed that it was closely related to a previous isolate of EBLV-1 from a serotine bat in Saxony-Anhalt obtained in the same year in an area adjacent to the place where the EBLV-1 infected stone marten was found. Both EBLV-1 isolates share a 99.5% identity. This is the first report of an EBLV-1a spill-over from an insectivorous bat into wildlife in Europe.
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Fritz W, Hoch P, Linder G, Schäfer R, Schütte R. Experimentelle Untersuchungen und Digitalrechner-Simulation des instationären Betriebsverhaltens von Trenndüsen-Kaskaden für die235U-Anreicherung. CHEM-ING-TECH 2004. [DOI: 10.1002/cite.330450906] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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