1. Cardiology Division, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, GRB 800, Boston, MA 02114, USA
2. Department of Interventional Cardiology, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo Ward, Tokyo 113-8519, Japan
3. Department of Cardiovascular Medicine, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan
4. Department of Cardiovascular Medicine, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0373, Japan
5. Division of Cardiology, Department of Internal Medicine, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki, Kanagawa 216-8511, Japan
6. Biostatistics Center, Massachusetts General Hospital, Harvard Medical School, 50 Staniford Street, Boston, MA 02114, USA
7. Department of Cardiovascular and Thoracic Sciences, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Catholic University of the Sacred Heart, L.go F. Vito 1, 00168 Rome, Italy
8. Zena and Michael A. Wiener Cardiovascular Institute, Icahn School of Medicine at Mount Sinai, 1 Gustave L Levy Place, New York City, NY 10029, USA
9. Division of Cardiology, Kyung Hee University Hospital, 1 Hoeki-dong, Dongdaemoon-ku, Seoul, 130-701, Korea