Geoffry Smith, Sunil J. Wimalawansa, Arnaud Laillou, Prak Sophonneary, Samoeurn Un, Rathavuth Hong, Etienne Poirot, Khov Kuong, Chhoun Chamnan, Francisco N. De los Reyes, and Frank T. Wieringa
Public Health (MAY 2015) , Publication stage: In Press Corrected Proof; Available online 14 May 2015: DOI: http://dx.doi.org/10.1016/j.puhe.2015.03.001