1. From the Department of Diagnostic and Interventional Radiology, Universitätsmedizin der Johannes Gutenberg-University, Mainz, Germany (K.-F.K., G.M.W., S.W., M.B.P., J.S., C.D.); Institute of Biomedical Biometry and Epidemiology, University Witten/Herdecke, Witten, Germany (F.K.); and Department of Thoracic Surgery, Kerckhoff-Hospital, Bad Nauheim, Germany (E.M.).