1. Dartmouth Health (E.P.Z., S.K.), Lebanon, NH.
2. Dartmouth Institute, Lebanon, NH (E.P.Z., A.J.O.).
3. Erlanger Heart and Lung Institute, Chattanooga, TN (M.C.).
4. St. Bernard’s Heart and Vascular Center, Jonesboro, AR (D.N.).
5. University of California San Diego, La Jolla (J.C.H.).
6. Kansas City Heart Rhythm Institute, Overland Park (D.D.).
7. Geisel School of Medicine at Dartmouth College, Hanover, NH (A.J.O.).
8. Cooper Medical School of Rowan University, Camden, NJ (A.M.R.).
9. Duke Clinical Research Institute, Duke University School of Medicine, Durham, NC (S.M.A.-K.).