Hae-Young Kim, Prisca Kasonde, Mwiya Mwiya, Donald M Thea, Chipepo Kankasa, Moses Sinkala, Grace Aldrovandi and Louise Kuhn*
* Corresponding author: Louise Kuhn lk24@columbia.edu
BMC Pediatrics 2012, 12:138 doi:10.1186/1471-2431-12-138