Kearkiat Praditpornsilpa, Bangkok, Thailand
Emergency Medicine Unit, King Chulalongkorn Memorial Hospital, Patumwan, Bangkok, Thailand
Department of otolaryngology, faculty of medicine, Chulalongkorn university, Bangkok, Thailand
Chula clinical research center, Bangkok, Thailand
Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
Chulalongkorn University, Bangkok, Thailand
Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
Chulalongkorn University, Bangkok, Thailand