1. Washington: American College of Obstetricians and Gynecologists;Committee on Obstetrics. Induction of labor;ACOG Technical Bulletin No,1995
2. Blue Book first databank 1996,1995
3. Misoprostol to induce labor [letter];Margulies;Lancet,1992
4. Labor induction with the prostaglandin E1 methyl analogue misoprostol versus oxytocin: a randomized trial;Sanchez-Ramos;Obstet Gynecol,1993
5. Intravaginal misoprostol as a cervical ripening agent;Fletcher;Br J Obstet Gynaecol,1993