Received: 3 October 2019
Accepted: 12 May 2020
First Online: 20 May 2020
Ethics approval and consent to participate
: This study was a secondary analyses of survey data collected by the Thailand National Statistical Office, which was not subjected to institutional review board. The analyses were conducted without individual identifying information. This secondary data analysis has received approval from the Prince of Songkla University Faculty of Medicine Ethical Review Board on 28 February 2019, project number REC.62–054–18-1.
: Not applicable.
: The authors declare that they have no competing interests.