TY  - RPRT
TI  - Extra-amniotic prostaglandin E2 and the unfavourable cervix.
AU  - J Shepherd
AU  - C Sims
AU  - I Craft
PY  - 1976
DO  - 10.1016/s0140-6736(76)90006-4
UR  - https://pubmed.ncbi.nlm.nih.gov/61394/
ID  - 61394
ER  -