1. Management of threatened abortion with real-time sonography;Anderson;Obstet Gynecol,1980
2. Drugs in Pregnancy and Lactation;Briggs,1994
3. Reproductive performance following treatment;Buster,1993
4. Expectant management: Its role in the treatment of ectopic pregnancy;Carson,1993
5. Diagnosis of ectopic pregnancy;Cartwright;Obstet Gynecol Clin North Am,1991