1. Ectopic pregnancy: A review of 147 cases;Alsuleiman;J Reprod Med,1982
2. The diagnostic challenge of ectopic pregnancy;Baker;Emerg Med Reports,1985
3. Reliability of urinary pregancy tests in the diagnosis of ectopic pregnancy;Barnes;J Reprod Med,1985
4. The radioreceptor assay for HCG in ectopic pregnancy;Berry;Obstet Gynecol,1979
5. Ectopic pregnancy: A 16 year survey of 905 cases;Bobrow;Obstet Gynecol,1960