[1] Natl Yang Ming Univ, Sch Med, Fac Med, Taipei 112, Taiwan
[2] Taichung Vet Gen Hosp, Div Gastroenterol, Taichung, Taiwan
[3] China Med Univ, Dept Publ Hlth, Taichung, Taiwan
[4] China Med Univ, Grad Inst Clin Med, Taichung, Taiwan
[5] Natl Chung Hsing Univ, Dept Life Sci, Taichung 40227, Taiwan
[6] Taichung Vet Gen Hosp, Dept Allergy Immunol & Rheumatol, Taichung, Taiwan
[7] Chung Shan Med Univ, Inst Microbiol & Immunol, Taichung, Taiwan
[8] Taichung Vet Gen Hosp, Dept Dermatol, Taichung, Taiwan
[9] Taipei Vet Gen Hosp, Dept Dermatol, Taipei, Taiwan
[10] Taipei Med Coll, Coll Med, Taipei, Taiwan
[11] Natl Hlth Res Inst, Inst Populat Hlth Sci, Miaoli, Taiwan