TY  - RPRT
TI  - Letter: Cervical milieu and conception.
AU  - L B Shettles
PY  - 1975
DO  - 10.1016/0002-9378(75)90901-1
UR  - https://pubmed.ncbi.nlm.nih.gov/1200056/
ID  - 1200056
ER  -