1. Department of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Puzi, Taiwan.
2. Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital, Puzi, Taiwan.
3. Chang Gung University College of Medicine, Taoyuan, Taiwan.
4. Health Information and Epidemiology Laboratory, Chang Gung Memorial Hospital, Puzi, Taiwan.
5. School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan.