1. Department of Otorhinolaryngology—Head and Neck Surgery, College of Medicine, Myunggok Medical Research Center, Konyang University, Daejeon, Republic of Korea
2. Department of Plastic Surgery, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Republic of Korea
3. Department of Otorhinolaryngology–Head and Neck Surgery, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Republic of Korea