1. From the Cardiovascular Institute of the South, Houma, LA (P.K.N.); Cardiovascular Associates of East Texas, Tyler (J.G.C.); Heart Center of Indiana, Indianapolis (B.B.); Brigham and Women’s Hospital, Harvard Medical School, Boston, MA (D.L.B.); 3DT Holdings, LLC, San Diego, CA (Z.C.B.); and North Carolina Heart and Vascular Research Center, Raleigh (G.A.).