1. Department of Family Medicine SMG‐SNU Boramae Hospital School of Medicine Seoul National University Seoul Korea
2. Department of Family Medicine Seoul St. Mary's Hospital College of Medicine The Catholic University of Korea Seoul Korea
3. Department of Family Practice and Community Health Ajou University Hospital School of Medicine Ajou University Suwon Korea
4. Department of Family Medicine Seoul National University Hospital School of Medicine Seoul National University Seoul Korea
5. Department of Health Promotion Center Ilsan Paik Hospital School of Medicine Inje University Goyang Korea