1. Department of Family Medicine, Inje University Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea
2. Department of Family Medicine, Hallym University School of Medicine, Chuncheon, Korea
3. College of Nursing, Shinhan University, Uijeongbu, Korea
4. Department of Family Medicine, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
5. Department of Family Medicine, Uijeongbu Eulji Medical Center, Eulji University, Uijeongbu, Korea