TY  - RPRT
TI  - What makes infant mortality rates fall in developing countries?
AU  - D Koch-Weser
AU  - A Yankauer
PY  - 1991
DO  - 10.2105/ajph.81.1.12
UR  - https://pubmed.ncbi.nlm.nih.gov/1983909/
ID  - 1983909
ER  -