1 Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan.
2 Dr Kao Clinic, Taichung, Taiwan.
3 Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan; Department of Allergy, Immunology & Rheumatology, Chung Shan Medical University Hospital, Taichung, Taiwan; Graduate Institute of Integrated Medicine, China Medical University, Taichung, Taiwan.