1. Department of Pediatrics, Gyeongsang Institute of Health Science, Gyeongsang National University School of Medicine, Jinju, Korea.
2. Department of Biochemistry, Gyeongsang Institute of Health Science, Gyeongsang National University School of Medicine, Jinju, Korea.
3. Department of Otolaryngology, Gyeongsang Institute of Health Science, Gyeongsang National University School of Medicine, Jinju, Korea.