TY  - RPRT
TI  - Estrogens in pregnancy.
AU  - M Levitz
AU  - B K Young
PY  - 1977
DO  - 10.1016/s0083-6729(08)60522-1
UR  - https://pubmed.ncbi.nlm.nih.gov/343361/
ID  - 343361
ER  -