Affiliation: | 1. Cardiology Division, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts;2. Interventional Cardiology, Ronald Reagan UCLA Medical Center, Los Angeles, California;3. Division of Cardiology, College of Medicine, Kyung Hee University, Seoul, Korea;4. Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China;5. Biostatistics Center, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts |