Outpatient Professor, Department of Otolaryngology, Kyungpook National University Hospital, Kyungpook National University Hospital Clinical Professor, Department of Otolaryngology, Kyungpook National University Hospital Director, Sleep Center, Department of Otolaryngology, Kyungpook National University University Hospital, Kyungpook National University Hospital Director, Sleep Center Full member, Korean

Now Korea Otolaryngology Clinic Director