title: Internal anal sphincter evaluation using 3D anal ultrasound.
authors.forename: José Luis
authors.initials: JL
authors.lastname: López-Negre
authors.forename: David
authors.initials: D
authors.lastname: Parés
mesh_terms: D001003:Anal Canal / Q000000981:diagnostic imaging*; D006801:Humans; D021621:Imaging, Three-Dimensional; D014463:Ultrasonography