1. Department of Pharmacy, Chang Gung Memorial Hospital, Keelung, Taiwan
2. Department of Pharmacy, Chang Gung Memorial Hospital, Linkou, Taiwan
3. Center for Evidence-Based Health Care, Department of Medical Research, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
4. Division of General Surgery, Department of Surgery Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
5. Division of General Surgery, Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
6. Cochrane Taiwan, Taipei Medical University, Taipei, Taiwan