title: An aortic valve with four leaflets.
authors.affiliation: Department of Pediatrics, Sapporo Social Insurance General Hospital, Sapporo Medical University, Japan. ysakai@sapmed.ac.jp
authors.forename: Y
authors.initials: Y
authors.lastname: Sakai
authors.forename: H
authors.initials: H
authors.lastname: Tomita
authors.forename: S
authors.initials: S
authors.lastname: Ukae
mesh_terms: D001021:Aortic Valve / Q000002:abnormalities* / Q000000981:diagnostic imaging*; D004452:Echocardiography / Q000379:methods*; D005260:Female; D006330:Heart Defects, Congenital / Q000175:diagnosis / Q000000981:diagnostic imaging*; D006801:Humans; D007223:Infant; D008991:Monitoring, Physiologic; D012720:Severity of Illness Index; D018615:Ultrasonography, Doppler, Color