Authors: T Kandah; T R Kimball; S R Daniels; R A Meyer; W E Gaum; D W Hannon; S Morrison; D C Schwartz Journal: J Am Soc Echocardiogr Date: 1991 Jan-Feb Impact factor: 5.251
Authors: C O Lima; D J Sahn; L M Valdes-Cruz; S J Goldberg; J V Barron; H D Allen; E Grenadier Journal: Circulation Date: 1983-04 Impact factor: 29.690