Ala’a Alkerwi*, Nicolas Sauvageot, Sybil Pagny, Jean Beissel, Charles Delagardelle and Marie-Lise Lair
* Corresponding author: Ala’a Alkerwi alaa.alkerwi@crp-sante.lu
BMC Public Health 2012, 12:864 doi:10.1186/1471-2458-12-864