de Sa J, Mounier-Jack S, Coker R
Communicable Diseases Policy Research Group, London School of Hygiene and Tropical Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand.
Public Health. 2009 Oct;123(10):643-4. doi: 10.1016/j.puhe.2009.07.017. Epub 2009 Sep 10.