1. Department of Public Health, China Medical University, Taichung 404, Taiwan, R.O.C.
2. Department of Pathology, Show Chwan Memorial Hospital, Changhua 500, Taiwan, R.O.C.
3. Chinese Medicine Department, Show Chwan Memorial Hospital, Changhua 500, Taiwan, R.O.C.
4. Department of Emergency Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei 231, Taiwan, R.O.C.
5. Department of Obstetrics and Gynecology, Kaohsiung Veterans General Hospital, Kaohsiung 813, Taiwan, R.O.C.
6. Institute of Biotechnology, National Changhua University of Education, Changhua 500, Taiwan, R.O.C.
7. School of Nursing, College of Health Care, China Medical University, Taichung 404, Taiwan, R.O.C.
8. Research Assistant Center, Show Chwan Memorial Hospital, Changhua 500, Taiwan, R.O.C.