Funding for this research was provided by:
Faculty of Medicine, Prince of Songkla University
Text and Data Mining valid from 2019-05-23
First Online: 23 May 2019
Compliance with Ethical Standards
: This work was supported by a grant from the Faculty of Medicine, Prince of Songkla University, Thailand.
: Sutep Jaruratanasirikul, Veerapong Vattanavanit, Maseetoh Samaeng, Monchana Nawakitrangsan and Somchai Sriwiriyajan have no conflicts of interest that are relevant to the content of this paper.
: All procedures performed in studies involving human participants were in accordance with the study protocol, the Ministerial Ordinance on GCP for Drugs, and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The study protocol (code EC-56-065-14-1-1) was approved by the IRB at Songklanagarind Hospital on 17 December 2012.
: Informed consent was obtained from each subject’s legally acceptable representative before enrollment.