Effects of papillary muscles and trabeculae on left ventricular quantification: increased impact of methodological variability in patients with left ventricular hypertrophy. - Janik M; Cham MD; Ross MI; Wang Y; Codella N; Min JK; Prince MR; Manoushagian S; Okin PM; Devereux RB; Weinsaft JW (Journal of hypertension, 2008)