Mapping of research on maternal health interventions in low- and middle-income countries: a review of 2292 publications between 2000 and 2012.
Chersich M, Blaauw D, Dumbaugh M, Penn-Kekana L, Thwala S, Bijlmakers L, Vargas E, Kern E, Kavanagh J, Dhana A, Becerra-Posada F, Mlotshwa L, Becerril-Montekio V, Mannava P, Luchters S, Pham MD, Portela AG, Rees H