Kesha Baptiste-Roberts*, Carolyn M Salafia, Wanda K Nicholson, Anne Duggan, Nae-Yuh Wang and Frederick L Brancati
* Corresponding author: Kesha Baptiste-Roberts kbrobert@jhsph.edu
BMC Pregnancy and Childbirth 2008, 8:44 doi:10.1186/1471-2393-8-44
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