1. Analysis of ultrasonographic criteria in the evaluation of ectopic pregnancy;Brown;A. J. R.,1978
2. Ectopic pregnancy in New York City, 1975–1980;Budnick;Am. J. Public Health,1982
3. The conservative surgical management of unruptured ectopic pregnancy;Decherney;Obstet. Gynecol.,1979
4. The use of ultrasound in threatened abortion;Duff;N. Z. Med. J.,1978
5. Ectopic pregnancy: A review of 122 cases;Gilstrap;South. Med. J.,1976