Kirk، E.؛ Bottomley، C.؛ Bourne، T. (2013). "Diagnosing ectopic pregnancy and current concepts in the management of pregnancy of unknown location". Human Reproduction Update. ج. 20 ع. 2: 250–61. DOI:10.1093/humupd/dmt047. PMID:24101604.
nih.gov
pubmed.ncbi.nlm.nih.gov
Kirk، E.؛ Bottomley، C.؛ Bourne، T. (2013). "Diagnosing ectopic pregnancy and current concepts in the management of pregnancy of unknown location". Human Reproduction Update. ج. 20 ع. 2: 250–61. DOI:10.1093/humupd/dmt047. PMID:24101604.