<p>· Deputy Head of Otolaryngology Department, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand</p> <p>· International affair of Royal College of Otolaryngologists Head and Neck Surgeons of Thailand</p> <p>· Past President of Asian Pediatric Otolaryngology Group (APOG)</p> <p>· Committee, The Princess Sirindhorn IT Foundation Craniofacial Center, Chiang Mai University, Chiang Mai, Thailand</p>