TY  - RPRT
TI  - Low-dose progestogens and ectopic pregnancy.
AU  - R Corcoran
AU  - M W Rizk
PY  - 1977
DO  - 10.1136/bmj.1.6060.578-b
UR  - https://pubmed.ncbi.nlm.nih.gov/843821/
ID  - 843821
ER  -