| Affiliation: | 1. Departments of Cardiovascular Medicine, Kobe City Medical Center General Hospital, 2-1-1 Minatojima-minami machi, Chuo-ku, Kobe 650-0047, Japan;2. Departments of Cardiovascular Surgery, Kobe City Medical Center General Hospital, 2-1-1 Minatojima-minami machi, Chuo-ku, Kobe 650-0047, Japan;3. Division of Biostatistics, Clinical Research Center Aichi Medical University, 1-1 Yazakokarimata, Nagakute 480-1195, Japan;4. Heart Valve Center, Department of Cardiovascular Surgery, Modori Hospital, 1-16 Edayoshi, Nishi-ku, Kobe 651-2133, Japan;5. Heart and Vascular Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, USA |
