Authors
Prakobkiat Hirunwiwatkul
Department of Otolaryngology, Faculty of Medicine, Chulalongkorn University, King Chulalongkorn Memorial Hospital,, Bangkok, Thailand
Patnarin Mahattanasakul
Department of Otolaryngology, Faculty of Medicine, Chulalongkorn University, King Chulalongkorn Memorial Hospital,, Bangkok, Thailand