1. Anorectal disorders in pregnancy;Simmons;J Obstet Gynecol,1964
2. Lord procedure for treatment of post-partum hemorroids and fissures;O’Connor;Obstetrics and Gynecology,1980
3. Post-partum anal fissures;Martin;Lancet,1953
4. Anal canal pressures are low in women with postpartum anal fissure;Corby;Br J Surg,1997
5. Grossesse et pathologie anale. Étude prospective;Pradel;Méd Chir Dig,1983