Funding for this research was provided by:
Srinakharinwirot University (276/2560)
National Science and Technology Development Agency (NSTDA) for the Research Chair Grant (P-15-50004)
Center of Excellence in Clinical Virology at Chulalongkorn University (GLE 58-014-30-004, RES560530093)
Text and Data Mining valid from 2019-10-18
Received: 11 July 2018
Accepted: 23 September 2019
First Online: 18 October 2019
Ethics approval and consent to participate
: The study protocol was approved by the Institutional Review Board of the Faculty of Medicine, Chulalongkorn University (IRB No.006/60), and the study was conducted in compliance with the principles of the Declaration of Helsinki under good clinical practice. Informed written consent was obtained from each participant.
: Consent for publication was obtained from the participants.
: The authors declare that they have no competing interests.