Kim, Jooyeon MD, PhD; Choi, Gwan MD; Kwon, Jae Hwan MD, PhD
Department of Otolaryngology-Head and Neck Surgery, Kosin University College of Medicine, Busan, Korea.
Address correspondence and reprint requests to Jae Hwan Kwon, MD, PhD, Department of Otolaryngology-Head and Neck Surgery, Kosin University College of Medicine, 34 Amnam-dong, Seo-gu, Busan 602-702, Korea; E-mail: [email protected]
Received 23 October, 2017
Accepted 9 February, 2018
The authors report no conflicts of interest.