?:authorAffiliation
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[\'Philipps University Marburg, Department of Medicine, D-355 Marburg, Lahn, Germany(2); Gastroenterology Research Laboratory, University of Iowa, Carver College of Medicine, Iowa City, IA 52242, USA(2); Research Laboratories, Chemie GrĂ¼nenthal GmbH, D-52062 Aachen, Germany(2). Electronic address: parend@t-online.de.\']
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