National observational study about the surgical treatment of anal fistula: Does the kind of hospital modify the results? Oscar Cano-Valderrama; Carlos Cerdán-Santacruz; Pilar Fernández Veiga; Tamara Fernández-Miguel; Elena Viejo; Álvaro García-Granero; Teresa Calderón; María L. Reyes;

Comparison of different methods to manage supralevator rectal opening in anal fistulas: A retrospective cohort study Pankaj Garg; Geetha R Menon; Baljit Kaur;

Recurrence and incidence of fistula after urgent drainage of an anal abscess. Long-term results Carlos Chaveli Díaz; Irene Esquiroz Lizaur; Inés Eguaras Córdoba; Gregorio González Álvarez; Ana Calvo Benito; Fabiola Oteiza Martínez; Mario de Miguel Velasco; Miguel Ángel Ciga Lozano;