Corresponding Author

Se Hwan Hwang MD, PhD

Department of Otolaryngology – Head and Neck Surgery, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea

Correspondence

Se Hwan Hwang, Department of Otolaryngology – Head and Neck Surgery, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 327 Sosa-ro, Bucheon-si, Gyeonggi-do 14 647, South Korea.

Email: yellobird@catholic.ac.kr