[1] Tzu Chi Univ, Sch Med, Hualien, Taiwan
[2] Buddhist Tzu Chi Gen Hosp, Dept Internal Med, Div Infect Dis, Hualien, Taiwan
[3] Buddhist Tzu Chi Gen Hosp, Dept Pathol, Hualien, Taiwan
[4] Buddhist Tzu Chi Gen Hosp, Dept Lab Med, Hualien, Taiwan
[5] Chang Gung Univ, Lab Human Immunol & Infect Dis, Grad Inst Clin Med Sci, Taoyuan, Taiwan