Hyo Yeol Kim, Professor of department of Otorhinolaryngology-Head and Neck Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine . Resident from 1996 to 2000 Fellowship from 2003-2005 Professor from 2005 to 2022 Work experience about 20 years including resident program Current and previous research interests: Obstructive sleep apnea and polysomnography Memberships of professional societies: Professor (Doctor)