1. Department of Radiology, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan, ROC.
2. Department of Radiology, Renai Branch, Taipei City Hospital, Taipei, Taiwan, ROC.
3. Department of Surgery, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan, ROC.
4. Department of Pathology, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan, ROC.