1. National Cancer Control Institute; National Cancer Center; Goyang Korea
2. Department of Preventive Medicine; Yonsei University College of Medicine; Seoul Korea
3. Institute of Health Services Research; Yonsei University College of Medicine; Seoul Korea
4. Department of Hospital Administration; Graduate School of Public Health; Yonsei University; Seoul Korea
5. Department of Healthcare Management; Eulji University; Seongnam Korea
6. Department of Internal Medicine; University of Nevada School of Medicine; Las Vegas Nevada USA
7. Department of Health Administration and Management; College of Medical Science; Soonchunhyang University; Asan Korea