TY  - RPRT
TI  - Estimating maternal mortality in developing countries.
AU  - W Graham
AU  - W Brass
AU  - R Snow
PY  - 1988
DO  - 10.1016/s0140-6736(88)91211-1
UR  - https://pubmed.ncbi.nlm.nih.gov/2893217/
ID  - 2893217
ER  -