1. Department of Family Medicine Healthcare System Gangnam CenterSeoul National University Hospital Seoul Republic of Korea
2. Department of Statistics and Actuarial Science Soongsil University Seoul Republic of Korea
3. Department of Family Medicine and Supportive Care Center Samsung Medical CenterSungkyunkwan University School of Medicine Seoul Republic of Korea
4. Department of Clinical Research Design and Evaluation Samsung Advanced Institute for Health Science and TechnologySungkyunkwan University Seoul Republic of Korea
5. Department of Medicine Samsung Medical CenterSungkyunkwan University School of Medicine Seoul Korea
6. Department of Medical Statistics Catholic University of Korea Seoul Republic of Korea
7. Department of Family Medicine/Center for Health Promotion and Disease Prevention Seoul National University Hospital Seoul Republic of Korea
8. Korea Central Cancer Registry Division of Cancer Registration and Surveillance National Cancer Control InstituteNational Cancer Center Goyang Republic of Korea