title: [Critical appraisal: band ligation and propranolol are equally effective for primary prevention of variceal bleeding].
authors.affiliation: Unidad de Medicina Basada en Evidencia, Pontificia Universidad Católica de Chile
authors.forename: Francisco Javier
authors.initials: FJ
authors.lastname: Larrondo G
authors.forename: Juan Jorge
authors.initials: JJ
authors.lastname: Manríquez M