title: Patent foramina ovale in elderly stroke patients.
authors.forename: T O
authors.initials: TO
authors.lastname: Cheng
mesh_terms: D000368:Aged; D004452:Echocardiography / Q000379:methods; D006344:Heart Septal Defects, Atrial / Q000000981:diagnostic imaging*; D006801:Humans; D014636:Valsalva Maneuver