1. Department of Life Science, Sogang University, Seoul, Korea.
2. Department of Genetic Epidemiology, SNP Genetics Inc., Seoul, Korea.
3. Division of Allergy and Respiratory Medicine, Soonchunhyang University Seoul Hospital, Seoul, Korea.
4. Division of Allergy and Respiratory Medicine & Genome Research Center for Allergy and Respiratory Diseases, Soonchunhyang University Bucheon Hospital, Bucheon, Korea.