1. Department of Surgery, National Taiwan University and Hospital, Taipei, Taiwan
2. Department of Surgical Oncology, National Taiwan University Cancer Center, Taipei, Taiwan
3. University of Taipei, Taipei, Taiwan
4. Department of Ophthalmology, HepingFuyou Branch, Taipei City Hospital, Taipei, Taiwan
5. Department of General Surgery, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan
6. School of Medicine, Buddhist Tzu Chi University, Hualien, Taiwan
7. Department of General Surgery, Zhong-Xing Branch, Taipei City Hospital, Taipei, Taiwan