TY  - RPRT
TI  - Measuring maternal mortality.
AU  - E Royston
AU  - C AbouZahr
PY  - 1992
DO  - 10.1111/j.1471-0528.1992.tb13815.x
UR  - https://pubmed.ncbi.nlm.nih.gov/1525090/
ID  - 1525090
ER  -