Funding for this research was provided by:
National Center for Global Health and Medicine (22-7, 28-1, 27-4, 30-6)
Text and Data Mining valid from 2019-06-10
Received: 31 July 2018
Accepted: 14 May 2019
First Online: 10 June 2019
Ethics approval and consent to participate
: The study protocol was reviewed and approved by the ethics committees of the Ministry of Health, Lao PDR and the National Centre for Global Health and Medicine, Japan (NCGM-950). Written informed consent was obtained from all participants or their parents or legal guardians.
: Not applicable.
: The authors declare that they have no competing interests.
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