1. Department of Interdisciplinary Program in Biomedical Science Major, Soonchunhyang Graduate School, Bucheon, Gyeonggi-do, Republic of Korea
2. Division of Allergy and Respiratory Disease, Soonchunhyang University Bucheon Hospital, Bucheon, Gyeonggi-do, Republic of Korea
3. Division of Allergy and Respiratory Medicine, Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea
4. Division of Respiratory Medicine, Soonchunhyang University CheonAn Hospital, Cheonan, Chungcheongnam-do, Republic of Korea