1. Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei 112, Taiwan
2. Division of Cardiovascular Surgery, Department of Surgery, Taipei Medical University Hospital, Taipei 112, Taiwan
3. Nursing Department, Cheng Kung University Hospital, Tainan 701, Taiwan
4. Department of Nursing, Chang Jung Christian University, Tainan 712, Taiwan
5. Department of Medical Research, Chi Mei Medical Center, Tainan 710, Taiwan
6. Department of Surgery, Chi Mei Medical Center, Tainan 710, Taiwan
7. Department of Health and Nutrition, Chia Nan University of Pharmacy and Science, Tainan 712, Taiwan