Affiliation: | a Department of General and Visceral Surgery, Augusta Krankenanstalt, Academic Teaching Hospital of the Ruhr-University Bochum, Bergstr. 26, 44791Bochum, Germany b Department of Dermatology and Allergology, Ruhr-University Bochum, Gudrunstr. 56, 44791 Bochum, Germany c Department of Physiological Science, University of California Los Angeles (UCLA), 621 Charles E. Young Drive South, Los Angeles, CA 90095-1527, USA |