1. Division of General Surgery, Department of Surgery, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan
2. Department of Physical Medicine and Rehabilitation, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei, Taiwan
3. Department of Nursing, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan
4. Division of General Surgery, Department of Surgery, Shuang Ho Hospital, Taipei Medical University, New Taipei, Taiwan
5. Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
6. School of Medicine, Tzu Chi University, Hualien, Taiwan