1. Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan, Republic of China
2. Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan, Republic of China
3. Department of Pediatrics, Mackay Memorial Hospital, Taipei, Taiwan, Republic of China
4. Department of Pediatric Surgery, Mackay Memorial Hospital, Taipei, Taiwan, Republic of China
5. Department of Pathology, Mackay Memorial Hospital, Taipei, Taiwan, Republic of China