1. From the Department of Cardio-Thoracic Surgery, Leiden University Medical Center, Leiden, The Netherlands (S.S., M.I.M.V.); Department of Public Health, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands (D.N., Y.V., E.W.S.); Department of Cardio-Thoracic Surgery, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands (L.N.); Department of Cardio-Thoracic Surgery, VU Medical Center, Amsterdam, The Netherlands (A.B.A.V.); and Department of Cardio-Thoracic...