1. Department of Obstetrics and Gynecology, Taipei Veterans General Hospital and Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan, R.O.C.
2. Department of Medical Research, Taipei Veterans General Hospital, Taipei, Taiwan, R.O.C.
3. Department of Pediatrics, Taipei Veterans General Hospital and National Yang-Ming University, Taipei, Taiwan, R.O.C.