Funding for this research was provided by:
Innovation Hubs of Thailand 4.0 project
TRF and the Thailand Office of Higher Education Commission (MRG6080269, MRG6180253)
TRF Senior Research Scholar (RTA5980007)
Chiang Mai Center of Excellence Project, Chiang Mai University
TRF Distinguished Research Professor Grant (DPG6080003)
Text and Data Mining valid from 2019-08-01
Received: 22 April 2019
Accepted: 19 June 2019
First Online: 1 August 2019
: The approval of the Ethical Committee of the Faculty of Associated Medical Sciences, Chiang Mai University (AMSEC-60EX-022) was obtained.
: Not applicable.
: The authors declare that they have no competing interest.