1. From Department of Cardiology, Stockholm South General Hospital, Stockholm, Sweden (N.G.); Departments of Molecular Medicine and Surgery (N.G., V.J., A.F.-C., U.S.) and Internal Medicine (M.J.H.), Karolinska Institutet, Stockholm, Sweden; and Departments of Cardiothoracic Surgery (V.J., A.F.-C., U.S.) and Emergency Medicine (M.J.H.), Karolinska University Hospital, Stockholm, Sweden.