1. From Yale University School of Medicine, New Haven, CT (R.L., C.B., J.D., F.L., L.S.); University of Iowa, Iowa City (B.O., I.L.); Antwerp University and University Hospital, Belgium (H.H.); Sports Cardiology Consultants LLC, Chicago, IL (C.L.); Cleveland Clinic, OH (E.S., B.L.W.); Mayo Clinic, Rochester, MN (M.A.); Johns Hopkins University, Baltimore, MD (H.C., A.C.); Tufts Medical Center, Boston, MA (N.A.M.E., B.J.M.); UT Southwestern, Dallas, TX (M.S.L.); University of Arizona, Tucson (F.M.);...