1. Department of IT Convergence; Korea National University of Transportation; Chungju 380-702 Republic of Korea
2. Department of Chemical & Biological Engineering; Korea National University of Transportation; Chungju 380-702 Republic of Korea
3. Department of Polymer Science and Engineering; Korea National University of Transportation; Chungju 380-702 Republic of Korea
4. Department of Otolaryngology-Head and Neck Surgery; Kosin University College of Medicine; Busan 49267 Republic of Korea