1. Department of Family Medicine, Wonkwang University Sanbon Hospital, Gunpo, Korea
2. Department of Family Medicine and Health Promotion Center, Hallym University Sacred Heart Hospital, Anyang, Korea
3. Department of Family Medicine, Seoul National University Hospital Healthcare System, Gangnam Center, Seoul, Korea
4. Department of Family Medicine, Inje University, Ilsan Paik Hospital, Goyang, Korea
5. Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Bucheon St. Mary’s Hospital, Bucheon, Korea
6. Department of Family Medicine, Kangdong Sacred Heart Hospital, Hallym University Hospital, Seoul, Korea
7. Department of Psychiatry, Hanyang University Hospital, Seoul, Korea
8. Division of Pulmonary Medicine and Allergy, Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
9. Department of Psychiatry, Seoul National University Hospital, Seoul, Korea
10. Division of Cardiology, Department of Internal Medicine, Hallym University Sacred Heart, Anyang, Korea