Ramsey A Lyimo*, Jossy van den Boogaard, Elizabeth Msoka, Harm J Hospers, Andre van der Ven, Declare Mushi and Marijn de Bruin
* Corresponding author: Ramsey A Lyimo rlyimo7@yahoo.com
BMC Public Health 2011, 11:92 doi:10.1186/1471-2458-11-92