1. Division of Hospital Medicine, Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei 10051, Taiwan
2. Division of Hospital Medicine, Department of Internal Medicine, Taipei City Hospital Zhongxing Branch, Taipei 103212, Taiwan
3. Department of Healthcare Administration, College of Medicine, I-Shou University, Kaohsiung 84001, Taiwan
4. Department of Orthopedics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
5. Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, Taipei 100229, Taiwan
6. College of Medicine, National Taiwan University, Taipei 10051, Taiwan