1. McCandlish R, Bowler U, van Asten H, Berridge G, Winter C, Sames L, et al. A randomised controlled trial of care of the perineum during second stage of normal labour. BJOG 1998;105:1262-72.
2. Royal College of Obstetricians and Gynaecologists. Methods and materials used in perineal repair. Guideline No. 23. London: RCOG press 2004.
3. Harkin R, Fitzpatrick M, O’Connell PR, O’Herlihy C. Anal sphincter disruption at vaginal delivery: Is recurrence predictable? Eur J Obstet Gynaecol 1999;106:318-23.
4. Coats PM, Chan KK, Wilkins M, Beard RJ. A comparison between midline and mediolateral episiotomies. BJOG 1980;87:408-12.
5. Peleg D, Kennedy CM, Merril D, Zlatnik FJ. Risk of repetition of a severe perineal laceration. Obstet Gynecol 1999;93:1021-4.
6. Groom KM, Paterson-Brown S. Can we improve on the diagnosis of third degree tears? Eur J Obstet Gynecol Reprod Biol 2002;101:19-21.
7. Andrews V, Sultan AH, Thakar R, Jones PW. Occult anal sphincter injuries – myth or reality? BJOG 2006;113:195-200.
8. Sultan AH, Kamm MA, Hudson CN. Obstetric perineal trauma: an audit of training. J Obstet Gynaecol 1995;15:19-23.
9. Fernando R, Sultan AH, Radley S, Jones PW, Johanson RB. Management of obstetric anal sphincter injury: A systematic review and national practice survey. BMC Health Services Research 2002;2:9.
10. Mc Lennan MT, Melick CF, Clancy SL, Artal R. Episiotomy and perineal repair. J Reprod Med 2002;47:1025 –1030.
11. Sultan AH, Thakar R. Third and fourth degree tears. In: Sultan AH, Thakar R, Fenner DE, eds. Perineal and anal sphincter trauma. Springer, London. 2007. pp 33-51.
12. Sultan AH, Thakar R. Lower genital tract and anal sphincter trauma. Best Pract Res Clin Obstet Gynaecol 2002;16:99-115.
13. Pinta TM, Kylanpaa M, Salmi TK, Teramo KAW, Luukkonen PS. Primary sphincter repair: Are the results of the operation good enough? Dis Colon Rectum 2004;47:18-23.
14. Fitzpatrick M, Cassidy M, O’Connell R, O’Herlihy C. Experience with an obstetric perineal clinic. Eur J Obstet Gynecol Reprod Biol 2002;100:199-203.
15. Sultan AH, Kettle C. Diagnosis of perineal trauma. In: Sultan AH, Thakar R, Fenner DE, eds. Perineal and anal sphincter trauma. Springer, London. 2007. pp 13-19.
16. Andrews V, Thakar R, Sultan AH, Kettle C. Can hands-on perineal repair workshops change clinical practice? Br J Midwifery 2004;13: 562-565.
Andrews V, Thakar R, Sultan AH. Structured hands-on training in repair of obstetric anal sphincter injuries (OASIS): an audit of clinical practice. Int Urogynecol J 2009;20:193-199