[1] Cleveland Clin, Dept Cardiovasc Med, Cleveland, OH 44106 USA
[2] Taipei Vet Gen Hosp, Taipei, Taiwan
[3] I Lan Hosp, Taipei, Taiwan
[4] Natl Yang Ming Univ, Sch Med, Div Cardiol, Taipei 112, Taiwan
[5] Natl Yang Ming Univ, Sch Med, Cardiovasc Res Ctr, Taipei 112, Taiwan