1. Department of Pediatrics, Hanyang University Guri Hospital, Guri, Korea.
2. Department of Medicine, Graduate School of Hanyang University, Guri, Korea.
3. Department of Otolaryngology-Head and Neck Surgery, Hanyang University College of Medicine, Guri, Korea.
4. High Impact Weather Research Department, National Institute of Meteorological Sciences, Gangneung, Korea.
5. Department of Statistics, Dongguk University, Seoul, Korea.