TY  - RPRT
TI  - Is conception in infertile couples treatment-related? A survey of 309 pregnancies.
AU  - D Bernstein
AU  - S Levin
AU  - E Amsterdam
AU  - V Insler
PY  - 1979
UR  - https://pubmed.ncbi.nlm.nih.gov/37183/
ID  - 37183
ER  -