Timm Westhoff performed several clinical trials in the fields of hypertension, transplantation and AKI. Among the experimental research activities, his focus is on humoral and endothelial mechanisms of vasoregulation. Until accepting the Chair for Nephrology at the University Clinics of the Ruhr-Universität Bochum in July 2013 Westhoff had worked at the Dept. of Nephrology, Charité – Campus Benjamin Franklin. Since his change to the Ruhr-Universität the clinical trial of Project 7 has been being performed in a two-center setting. Walter Zidek is Chairman of Internal Medicine and Head of the Dept. of Nephrology and Endocrinology Charité – Campus Benjamin Franklin. He has been the President of the German Society of Hypertension from 2001 to 2004. Walter Zidek has conducted several landmark studies in hypertension and clinical nephrology. In his experimental research he successfully identified and characterized several new vasoactive compounds. See Project 6 for Schmidt-Ott.