Funding for this research was provided by:
the Research Division Faculty of Medicine Siriraj Hospital (R015834003)
Health System Research Institute (HSRI), Nonthaburi, Thailand (59-009)
Received: 29 July 2019
Accepted: 18 December 2019
First Online: 9 January 2020
Ethics approval and consent to participate
: The protocol for this study was approved by the institutional review boards of all participating centers (Local Ethics Committee including Siriraj Institutional Review Board, Ethical Clearance Committee on Human Rights Related to Research Involving Human Subjects Faculty of Medicine Ramathibodi Hospital, The Human Research Ethics Committee of Thammasat University, Institutional Review Board Faculty of Medicine Chulalongkorn University, Chiang Mai University Research Ethic Committee) and other participating centers were approved by The Ethical Review Committee for Research in Human Subjects Ministry of Public Health, Thailand. All study participants provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.