Funding for this research was provided by:
Faculty of Tropical Medicine, Mahidol University (Research Fund 2017)
Received: 27 April 2020
Accepted: 25 August 2020
First Online: 31 August 2020
Ethics approval and consent to participate
: Ethical approval was obtained and reviewed by the Ethics Committee from Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand (MUTM 2018-013-01).
: Not applicable.
: The authors declare that they have no competing interests.