The effect of different human chorionic gonadotropin assay sensitivity on screening for ectopic pregnancy
Romero R, Kadar N, Copel J, Jeanty P, DeCherney A, Hobbins J. The effect of different human chorionic gonadotropin assay sensitivity on screening for ectopic pregnancy. American Journal Of Obstetrics And Gynecology 1985, 153: 72-74. PMID: 4037000, DOI: 10.1016/0002-9378(85)90593-9.Peer-Reviewed Original Research