1. Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Republic of Korea
2. Department of Pharmacology, Yonsei University College of Medicine, Seoul, Republic of Korea
3. Department of Chemical and Biomolecular Engineering, Sogang University, Seoul, Republic of Korea
4. The Research Center for Human Natural Defense System, Yonsei University College of Medicine, Seoul, Republic of Korea
5. The Airway Mucus Institute, Yonsei University College of Medicine, Seoul, Republic of Korea