1. Johannes Holtschmidt, MD, Kliniken Essen-Mitte, Essen, Germany, and University of Cologne, Cologne, Germany; Sherko Kuemmel, PhD, Kliniken Essen-Mitte, Essen, Germany; David Krug, MD, University Hospital Schleswig-Holstein, Kiel, Germany; Elisabeth Breit, PhD, Kliniken Essen-Mitte, Essen, Germany; Thorsten Kuehn, PhD, Clinic Esslingen, Esslingen, Germany; and Mattea Reinisch, MD, Kliniken Essen-Mitte, Essen, Germany