1. From the Stanford University School of Medicine, Palo Alto, CA (A.U., J.F., M.W., F.D., M.V.P., E.A., V.F.); Hospital de Clinicas de Porto Alegre, Porto Alegre, Brazil (R.S.); University of Washington, Seattle, WA (J.D.); Department of Cardiac and Vascular Sciences, St. George's Hospital of London, London, UK (S.S.); Institute of Sports Medicine and Science, Largo Piero Gabrielli, Rome, Italy (A.P.); University of Padua Medical School, Padova, Italy (D.C.); Institute of Sports Medicine, Prevention...