1. From the First Department of Internal Medicine, Venice City Hospital, Venice, Italy (G.V., F.S., C.L., G.B.A.); the CNR Unit for Muscle Physiopathology, University of Padua, Padua, Italy (L.D.L.); the Department of Cardiology, Venice City Hospital, Venice, Italy (L.F.); and Cardiology and IRCCS, Gussago, Brescia, Italy (M.V., C.C.).