1. Thomas TG (1985) Vulvar and vaginal enterocele. NY Med J 42:705–711
2. Elftman HO (1932) The evolution of the pelvic floor of primates. Am J Anat 51:307–346
3. Porges RF, Porges JC, Clinick G (1960) Mechanisms of uterine support and the pathogenesis of uterine prolapse. Obstet Gynecol 15:711–726
4. Timonen S, Nuroanne E, Meyer B (1968) Genital prolapse. Ann Chir Gynaecol Genn 52:363–370
5. Lawson JB (1972) Recto-vaginal fistulae following difficult labour. Proc R Soc Med 65:283