1. Perforation of the sigmoid colon during pregnancy A rare complication of endometriosis;Clement;Br J Obstet Gynaecol,1977
2. Congenital atresia of the uterine cervix;Geary;Obstet Gynecol,1973
3. Surgical reconstruction of the congenitally atretic cervix;Jacob;Obstet Gynecol Surv,1989
4. Colon-endometriose med perforation under graviditet;Rud;Ugesker Laeg,1979