Affiliation: | (1) Department of Internal Medicine, Holweide Hospital, City of Cologne Hospitals, Ltd., Cologne, Germany;(2) Department of Internal Medicine II, University of Witten/Herdecke, Campus Cologne-Merheim, Germany;(3) Institution for Research in Operative Medicine (IFOM), University of Witten/Herdecke, Campus Cologne-Merheim, Germany |