1. From Departments of Cardiology (A.M., J.G.S.) and Cardiothoracic Surgery (J.N.), Clinical Sciences, Lund University, and Skåne University Hospital, Lund, Sweden; Center for Primary Health Care Research, Lund University, Malmö, Sweden (X.L., K.S.); Department of Cardiology, Copenhagen University Hospital Gentofte, Hellerup, Denmark (C.A.); Cardiovascular Research Center and Center for Human Genetic Research, Massachusetts General Hospital and Harvard Medical School, Boston (J.G.S.); and Program in...