To select the patients the following parameters were used: a their fecal incontinence had not responded to medical treatment, b that they would have had any of the three surgical procedures as described.
Para seleccionar a los pacientes se usaron los siguientes parámetros: a que su incontinencia fecal no hubiera respondido al tratamiento médico, b que se hubieran realizado alguno de los tres procedimientos quirúrgicos descritos.