TY  - RPRT
TI  - [Perinatal mortality risk factors in a case-control study].
AU  - G Ruelas-Orozco
AU  - J Guzmán
AU  - J M Malacara
PY  - 1985
UR  - https://pubmed.ncbi.nlm.nih.gov/3986039/
ID  - 3986039
ER  -