1. From the Minneapolis Heart Institute and Minnesota Cardiovascular Research Institute, Minneapolis, Minn (R.S.S.); Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Cambridge (E.R.R.); Borgess Medical Center, Kalamazoo, Mich (A.C.); Brigham and Women’s Hospital, Boston, Mass (E.R.R., C.R.); University of British Columbia, Vancouver, Canada (L.M.); American Cardiovascular Research Institute, Atlanta, Ga (N.A.C., K.A.R.); Washington Hospital Center, Washington,...