Education:
1.Rhinology Unit, Department of Otorhinolaryngology, Hatyai Hospital, Hatyai, Songkhla, Thailand.
Career:
* Address Correspondence to author: Boonchai Piriyakitkamjorn, MD Rhinology Unit, Hatyai Hospital,182 Rattakarn Road, Hatyai, Songkhla, 90110 Thailand.
e-mail: [email protected]