1. Department of Family Medicine Healthcare System Gangnam Center, Seoul National University Hospital SeoulKorea
2. Department of Family Medicine and Supportive Care Center Samsung Medical Center, Sungkyunkwan University School of Medicine SeoulKorea
3. Department of Clinical Research Design and Evaluation Samsung Advanced Institute for Health Sciences and Technology (SAIHST), Sungkyunkwan University SeoulKorea
4. Department of Statistics and Actuarial Science Soongsil University SeoulKorea
5. Department of Medical Statistics Catholic University of Korea SeoulKorea
6. Department of Obstetrics and Gynecology Asan Medical Center, University of Ulsan College of Medicine Seoul Korea
7. Department of Economics and Center for Economic and Social Research University of Southern California Los Angeles CAUSA
8. RANC Corporation Santa Monica CA USA
9. Department of Neurology Seoul National University Bundang Hospital and Seoul National University College of Medicine SeongnamKorea
10. Department of Family Medicine Korea University College of Medicine SeoulKorea
11. Department of Family Medicine Asan Medical Center, University of Ulsan College of Medicine Seoul Korea