Acknowledgements
DKD, P.
The authors thank the patients and the investigators who participated in this clinical study and every study site that took part: Helios St. Elisabeth Klinik Oberhausen, Helios Klinikum Wuppertal, Helios Klinikum Berlin-Buch, Helios St. Johannes Klinik, Helios Klinik Lengerich, Helios Klinik Hüls, Helios Klinik Jerichower Land (Burg), Helios Klinikum Krefeld, DKD Helios Klinik Wiesbaden, Helios St. Josefs-Hospital Bochum-Linden, Helios Kliniken Niederberg, Helios Klinik München Perlach, Helios Klinik Blankenhain, Helios Klinik Wipperfürth, Helios Klinik Siegburg, Helios St. Elisabeth Klinik Hünfeld, and Helios Klinikum Schwerin. The development of the study design was supported by D. Seidel at the Institute for Research in Operative Medicine, University of Witten/Herdecke, Cologne, Germany. Administrative support was kindly provided by P. Thürmann at the Department for Clinical Pharmacology, University of Witten/Herdecke.