Institution: | a Division of Clinical and Interventional Angiology, Swiss Cardiovascular Center, Bern University Hospital and University of Bern, Bern, Switzerland c Division of Cardiology, Swiss Cardiovascular Center, Bern University Hospital and University of Bern, Bern, Switzerland b Division of Clinical Epidemiology and Biostatistics, Institute of Social and Preventive Medicine University of Bern, and Clinical Trial Unit, Bern University Hospital, Bern, Switzerland |