1. 1Department of Heavy Particles and Radiation Oncology, Taipei Veterans General Hospital, Taipei, Taiwan.
2. 2Institute of Public Health, College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan.
3. 3School of Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan.
4. 4Division of Hematology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.
5. 5Institute of Emergency and Critical Care Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan.
6. 6Department of Family Medicine, Taipei Veterans General Hospital, Hsinchu Branch, Taipei, Taiwan.
7. 7Department of Family Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.
8. 8Institute of Hospital and Health Care Administration, National Yang Ming Chiao Tung University, Taipei, Taiwan.
9. 9Office of the Deputy Superintendent, National Yang Ming Chiao Tung University Hospital, Yilan, Taiwan.