Funding for this research was provided by:
Thailand Research Fund
Text and Data Mining valid from 2018-08-06
Received: 28 March 2018
Accepted: 30 July 2018
First Online: 6 August 2018
Ethics approval and consent to participate
: The research methodology employed in this study was approved by The Institutional Review Board of the Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand (IRB No. 426/58 and 135/59). All study subjects provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
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