1. Division of Urology; Department of Surgery; Changhua Christian Hospital; Changhua Taiwan
2. School of Medicine; Chung Shan Medical University; Taichung Taiwan
3. School of Medicine; Kaohsiung Medical University; Kaohsiung Taiwan
4. Department of Anesthesiology; Wan Fang Hospital; Taipei Medical University; Taipei Taiwan
5. Graduate Institute of Clinical Medicine; College of Medicine; Taipei Medical University; Taipei Taiwan
6. School of Medicine; College of Medicine; Taipei Medical University; Taipei Taiwan
7. Department of Anesthesiology; Taipei Tzu Chi Hospital; Taipei Taiwan
8. School of Medicine; Tzu Chi University; Hualien Taiwan
9. School of Nursing; College of Nursing; Taipei Medical University; Taipei Taiwan