TY  - RPRT
TI  - An algorithm for determining gestational age from unconjugated estriol levels.
AU  - J E Buster
AU  - A G Freeman
AU  - C J Hobel
PY  - 1980
UR  - https://pubmed.ncbi.nlm.nih.gov/7432738/
ID  - 7432738
ER  -