1. Risk factors for shoulder dystocia;Acker;Obstet Gynecol,1985
2. A complication of fetal macrosomia and prolonged second stage of labor with midpelvic delivery;Benedetti;Obstet Gynecol,1978
3. Macrosomia: maternal characteristics and infant complications;Spellacy;Obstet Gynecol,1985
4. Manual of obstetrics;Niswander,1983
5. Shoulder dystocia: an organized approach;Cullins;Female Patient,1991