1. Department of Public Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan
2. Department of Surgery, Kaohsiung Veterans General Hospital Tainan Branch, Tainan, Taiwan
3. Institute of Allied Health Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
4. Department of Social Work, College of Nursing and Professional Disciplines, University of North Dakota, Grand Forks, North Dakota, USA
5. Department of Pediatrics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan