%0 Journal Article %T Loss to Followup: A Major Challenge to Successful Implementation of Prevention of Mother-to-Child Transmission of HIV-1 Programs in Sub-Saharan Africa %A Fatch W. Kalembo %A Maggie Zgambo %J ISRN AIDS %D 2012 %I Hindawi Publishing Corporation %R 10.5402/2012/589817 %U http://dx.doi.org/10.5402/2012/589817