[1] Fu Dan Univ, Zhong Shan Hosp, Dept Internal Med, Shanghai, Peoples R China
[2] Univ Tokyo, Sch Med, Div Nephrol & Endocrinol, Tokyo 113, Japan
[3] Sapporo Med Univ, Sch Med, Dept Internal Med 2, Sapporo, Hokkaido, Japan
[4] An Zhen Hosp, Dept Epidemiol, Beijing, Peoples R China
[5] Yonsei Univ, Coll Med, Yonsei Cardiovasc Ctr, Div Cardiol, Seoul, South Korea
[6] Sungkyunkwan Univ Sch Med, Cheil Gen Hosp, Dept Med Cardiol, Seoul, South Korea
[7] Natl Taiwan Univ, Taipei 10764, Taiwan
[8] Natl Taiwan Univ Hosp, Dept Internal Med, Taipei 100, Taiwan