TY  - RPRT
TI  - Utility of an algorithm to diagnose ectopic pregnancy.
AU  - M V Sauer
AU  - I A Rodi
PY  - 1990
DO  - 10.1016/0020-7292(90)90178-n
UR  - https://pubmed.ncbi.nlm.nih.gov/1968014/
ID  - 1968014
ER  -