1. Council on Resident Education in Obstetrics and Gynecology educational objectives: core curriculum in obstetrics and gynecology;Council on Resident Education in Obstetrics and Gynecology,1996
2. Risks of fetomaternal hemorrhage resulting from amniocentesis with and without ultrasound placental localization;Harrison;Obstet Gynecol,1975
3. Amniocentesis with and without ultrasound guidance;Crandon;Br J Obstet Gynaecol,1979
4. How to improve your amniocentesis technique;Jeanty;Am J Obstet Gynecol,1983
5. Sonographically monitored amniocentesis to decrease intraoperative complications;Romero;Obstet Gynecol,1985