Funding for this research was provided by:
Faculty of Medicine, Prince of Songkla University
The Gastroenterological Association of Thailand
Article History
Received: 5 December 2020
Accepted: 15 February 2021
First Online: 3 March 2021
Ethics approval and consent to participate
: The study was approved by the Office of Human Ethics Committee, Faculty of Medicine, Prince of Songkla University, and registered in the Thai clinical trials registry. Informed consents were obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.