Fistulotomy with or without marsupialisation of wound edges in treatment of simple anal fistula: a randomised controlled trial. - Anan M; Emile SH; Elgendy H; Shalaby M; Elshobaky A; Abdel-Razik MA; Elbaz SA; Farid M (Annals of the Royal College of Surgeons of England, 2019)