Lertpongpiroon, Rapee
Rattarittamrong, Ekarat
Rattanathammethee, Thanawat
Chai-Adisaksopha, Chatree
Tantiworawit, Adisak
Salee, Parichat
Norasetthada, Lalita
Article History
Received: 9 May 2018
Accepted: 28 October 2018
First Online: 4 December 2018
Ethics approval and consent to participate
: This study was approved by ethical research committee, Faculty of Medicine, Chiang Mai University. The need for informed consent has been waived according to national regulations.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.