1. Cardiology Division, Massachusetts General Hospital, Harvard Medical School, Boston (L.M.S., D.D.Y., M.A., A.N., H.Y., D.K., K.S., T.N., I.M.).
2. Department of Interventional Cardiology, Tokyo Medical and Dental University, Japan (T.Y.).
3. Department of Cardiovascular Medicine, Tsuchiura Kyodo General Hospital, Ibaraki, Japan (T.S., T.K.).
4. Department of Cardiovascular Medicine, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan (Y.M.).
5. Department of Cardiovascular Medicine, Nara Prefecture General Medical Center, Japan (T.S.).
6. Biostatistics Center, Massachusetts General Hospital, Harvard Medical School, Boston (H.L.).
7. Interventional Cardiology Unit, New Tokyo Hospital, Chiba, Japan (S.N.).
8. Zena and Michael A. Wiener Cardiovascular Institute, Icahn School of Medicine at Mount Sinai, New York (V.F.).
9. Division of Cardiology, Kyung Hee University Hospital, Seoul, Korea (I.-K.J.).