1. Department of Family Medicine/Supportive Care Center, Samsung Medical Center, 81 Irwon-Ro, Gangnam-gu, Seoul 06351, Republic of Korea
2. Department of Family Medicine, CHA Gumi Medical Center, CHA University 12, Sinsi-ro 10-gil, Gumi-si, Gyeongsangbuk-do 39295,, Republic of Korea
3. Department of Clinical Research Design & Evaluation, Samsung Advanced Institute for Health Science & Technology (SAIHST), Sungkyunkwan University, 81 Irwon-Ro, Gangnam-gu, Seoul 06351, Republic of Korea
4. Department of Statistics and Actuarial Science, Soongsil University, 369, Sangdo-ro, Dongjak-gu, Seoul 06978, Republic of Korea
5. Department of Medical Statistics, The Catholic University of Korea, 296-12, Changgyeonggung-ro, Jongno-gu, Seoul 03083, Republic of Korea
6. Samsung C&T Medical Clinic, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, 29, Saemunan-ro, Jongno-gu, Seoul 03181, Republic of Korea
7. Department of Family Medicine, Healthcare System Gangnam Center, Seoul National University Hospital, 152, Teheran-ro, Gangnam-gu, Seoul 06236, Republic of Korea
8. Department of Neurology, Seoul National University Hospital, 101, Daehak-ro, Jongno-gu, Seoul 03080, Republic of Korea
9. Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, 101, Daehak-ro, Jongno-gu, Seoul 03080, Republic of Korea