[1] Chang Gung Mem Hosp, Dept Anesthesiol, Linkou Med Ctr, Taoyuan, Taiwan
[2] Chang Gung Univ, Coll Med, Taoyuan, Taiwan
[3] Dept Cardiol, Chiayi Branch, Chiayi, Taiwan
[4] Chang Gung Mem Hosp, Linkou Med Ctr, Dept Cardiol, Taoyuan, Taiwan
[5] Chang Gung Mem Hosp, Linkou Med Ctr, Div Thorac & Cardiovasc Surg, Dept Surg, 5 Fusing St, Taoyuan 33305, Taiwan
[6] Chang Gung Univ, Grad Inst Clin Med Sci, Coll Med, Taoyuan, Taiwan