TY  - RPRT
TI  - Embryo migration responsible for ectopic pregnancies.
AU  - B Rizk
AU  - P Brinsden
PY  - 1990
DO  - 10.1016/0002-9378(90)90730-u
UR  - https://pubmed.ncbi.nlm.nih.gov/2220954/
ID  - 2220954
ER  -