TY  - RPRT
TI  - Fetal lung maturity.
AU  - W R Walker
AU  - N V Simon
PY  - 1987
DO  - 10.1016/0002-9378(87)90254-7
UR  - https://pubmed.ncbi.nlm.nih.gov/3799762/
ID  - 3799762
ER  -