Diagnosis of acute and persistent ectopic pregnancy.
Graczykowski JW, Seifer DB. Diagnosis of acute and persistent ectopic pregnancy. Clinical Obstetrics & Gynecology 1999, 42: 9-22; quiz 55-6. PMID: 10073295, DOI: 10.1097/00003081-199903000-00005.Peer-Reviewed Original Research