1. Division of Allergy and Respiratory Medicine, Soonchunhyang University Bucheon Hospital, Bucheon, Republic of Korea.
2. Division of Allergy and Respiratory Medicine, Soonchunhyang University Seoul Hospital, Yongsan-Gu, Republic of Korea.
3. Department of Internal Medicine, Chung-Ang University Yongsan Hospital, Seoul, Republic of Korea.
4. Division of Internal Medicine, Chungbuk National University, Cheongju, Republic of Korea.
5. Department of Allergy, Chonnam National University, Gwangju, Republic of Korea.
6. Department of Genetic Epidemiology, SNP Genetics Incorporation, Seoul, Republic of Korea.
7. Department of Life Science, Sogang University, Seoul, Republic of Korea.
8. Asthma Genome Research Center, Soonchunhyang University Bucheon Hospital, Bucheon, Republic of Korea.