title: Author's reply to letter from Dr. Ahmed Al-Badr on: "Trends in the aetiology of urogenital fistula: a case of 'retrogressive evolution'?".
authors.affiliation: Guest Senior Lecturer in Urogynaecology, Newcastle University, Newcastle upon Tyne, UK. paul.hilton@ncl.ac.uk.
authors.forename: Paul
authors.initials: P
authors.lastname: Hilton
mesh_terms: D005402:Fistula; D006801:Humans