1. Department of Family Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan.
2. Department of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Chiayi, Taiwan.
3. Health Information and Epidemiology Laboratory of Chang Gung Memorial Hospital, Chiayi, Taiwan.
4. School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan.