title: SIMPLIFIED GRAPHIC METHOD FOR CALCULATION OF STENOTIC VALVE AREAS.
authors.affiliation: Department of Cardiovascular Surgery "La Paz" Hospital, Madrid, Spain.
authors.forename: José Luis
authors.initials: JL
authors.lastname: Carrasco
authors.forename: José Suarez
authors.initials: JS
authors.lastname: De Lezo
authors.forename: C Wayne
authors.initials: CW
authors.lastname: Hibbs
authors.forename: Stephen R.
authors.initials: SR
authors.lastname: Igo