1. Division of Cardiovascular Medicine (A.J., I.S., J.T., V.P., I.R., S.Y., K.N.), Stanford University School of Medicine, CA.
2. Department of Radiology (H.C.B., D.M., M.W., D.F.), Stanford University School of Medicine, CA.
3. Arrhythmia Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing (S.Y.).