Graduated from Seoul National University College of Medicine
Resident, Department of Otolaryngology Seoul National University Hospital, Seoul, Korea
Instructor, Department of Otolaryngology Chung Nam National University, College of Medicine, Daejon, Korea
Assistant Professor, Department of Otolaryngology Seoul National University College of Medicine Seoul, Korea
Professor, Department of Otolaryngology Seoul National University College of Medicine Seoul, Korea
Chairman, Department of Otolaryngology-Head and Neck Surgery, Seoul National University College of Medicine
Seoul National University
Seoul Metropolitan Government Boramae Medical Center
Professor Emeritus, Seoul National University
Visiting Doctor for voice surgery Department of Otolaryngology Keio University, Tokyo, Japan(Prof. S. Saito)
Clinical Fellow for head and neck surgery Department of Otolaryngology University of Bonn, Bonn, Germany(Prof. C. Herberhold)
Visiting Professor for microvascular surgery Department of Otolaryngology University of Michigan, Ann Arbor, U.S.A.(Prof. C. Krause)
Visiting Professor for basic research in head and neck oncology Department of Otolaryngology University of Pittsburgh, Pittsburgh, U.S.A.(Prof. E. N. Myers)
Visiting Professor for professional voice Department of Otolaryngology Thomas Jefferson University Philadelphia, PA, U.S.A.(Prof. R.T. Sataloff)
Visiting Professor for Goettingen University ENT attending Dr. Steiner’s Laser Surgery Course, Goettingen, Germany
President of Korean Society of Head and Neck Surgery
President of Korean Society of Otorhinolaryngology-Head and Neck Surgery
President of Korean Thyroid Association
President of The Korean Society for Head & Neck Oncology
President of 4th World Congress of International Federation of Head and Neck Oncologic Societies
Member of the German Society of Oto-Rhino-Laryngology, Head and Neck Surgery
Member of American Academy of Otolaryngology-Head and neck surgery
Member of American Head & Neck Society
Member of American Laryngological Association
Korean Representative of the International Broncho-Esophagological Society
Director of Asia-Oceania Association of Otolaryngology - Head and Neck Surgery Societies
Awards and Honors
Academic Award of Korean Society of Otorhinolaryngology-Head and Neck Surgery
Pan-Arithmetic Award of Korean Thyroid Association