1. Department of Health Policy and Management, School of Medicine, Kangwon National University, 1 Kangwondaehak-gil, Chuncheon-si 24341, Republic of Korea
2. Department of Internal Medicine, Kangwon National University, 1 Kangwondaehak-gil, Chuncheon-si 24341, Republic of Korea
3. Department of Preventive Medicine, Kangwon National University Hospital, 156, Baengnyeong-ro, Chuncheon-si 24289, Republic of Korea
4. Department of Internal Medicine, Kangwon National University Hospital, 156, Baengnyeong-ro, Chuncheon-si 24289, Republic of Korea
5. Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Hallym University Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, 77, Sakju-ro, Chuncheon-si 24253, Republic of Korea