1. Department of Family Medicine/Obesity and Metabolic Health Center, Kangdong Sacred Heart Hospital, Hallym University, Seoul, Korea.
2. Department of Medicine, School of Medicine, Sungkyunkwan University, Seoul, Korea.
3. Department of Family Medicine & Supportive Care Center, Samsung Medical Center, Seoul, Korea.
4. Department of Family Medicine, CHA Gumi Medical Center, CHA University, Gumi, Korea.
5. Department of Family Medicine, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, Korea.
6. National Cancer Control Institute, National Cancer Center, Goyang, Korea.
7. Department of Psychology, DePaul University, Chicago, IL, USA.
8. Department of Clinical Research Design and Evaluation, Samsung Advanced Institute for Health Sciences and Technology (SAIHST), Sungkyunkwan University, Seoul, Korea.