1. From the Department of Internal Medicine I (Cardiology, Pneumology, Angiology) (A.N., C.K., M.Z., B.B., N.M., P.S.) and Research Center for Bioelectromagnetic Interaction at the Institute of Occupational Medicine; former at the Institute of Hygiene and Environmental Medicine (S.J., D.S., J.S.), University Hospital RWTH Aachen, Aachen, Germany; and Department of Cardiology, Maastricht University Medical Center, Maastricht, The Netherlands (C.K.).