[1] Chung Shan Med Univ, Med, Taichung, Taiwan
[2] Kaohsiung Municipal United Hosp, Dept Internal Med, Kaohsiung, Taiwan
[3] Chung Shan Med Univ Hosp, Dept Allergy Immunol & Rheumatol, Taichung, Taiwan
[4] Chung Shan Med Univ, Inst Med, Coll Med, Taichung, Taiwan
[5] China Med Univ, Grad Inst Integrated Med, Taichung, Taiwan