title: Aortic flow velocity in older subjects using continuous-wave Doppler echocardiography.
mesh_terms: D000368:Aged; D000375:Aging; D001021:Aortic Valve / Q000502:physiology*; D001783:Blood Flow Velocity; D004452:Echocardiography / Q000379:methods*; D006801:Humans; D008297:Male; D008875:Middle Aged