[1] Min Sheng Gen Hosp, Dept Pathol, Hualien, Taiwan
[2] Buddhist Tzu Chi Gen Hosp, Taipei Branch, Dept Internal Med, Div Pulm & Crit Care Med, Hualien, Taiwan
[3] Buddhist Tzu Chi Gen Hosp, Taipei Branch, Dept Internal Med, Div Gastroenterol, Hualien, Taiwan