Received: 25 October 2018
Accepted: 14 January 2019
First Online: 25 January 2019
Ethics approval and consent to participate
: Ethical clearance was obtained from the National Ethics Committee for Health Research, Lao PDR (No. 073/NECHR), and from the Ethics Review Committee for Epidemiology Study, University of the Ryukyus (No. 1172). The permission to conduct the study was given by the General Logistic Department, the Ministry of Defense (No. 358), Lao PDR, and also from the camp leaders. The interviewers and moderator explained the purpose of the study and procedures in Laotian. The participants were also informed that their participation was voluntary, and that the results of the blood analyses and interviews would be treated in confidence. Moreover, they were informed that they can withdraw from the interview and discussion anytime without consequences.
: Not applicable.
: The authors declare that they have no competing interests.
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