Funding for this research was provided by:
Thammasat University (2016-01)
Text and Data Mining valid from 2019-07-10
Received: 18 December 2018
Accepted: 29 May 2019
First Online: 10 July 2019
Ethics approval and consent to participate
: Ethics approval and consent to participate of the study protocol was obtained from the Human Research Ethics Committee of Thammasat University No.1 (Faculty of Medicine). Written informed consent for study participation was obtained from each subject before the study.
: Not applicable.
: The authors declare that they have no competing interests.