Agreement between community echocardiography and hospital echocardiography in patients suspected of having left ventricular systolic dysfunction
S Jeyaseelan, B Goudie, S Pringle, P Donnan, F Sullivan, and A Struthers
Postgrad Med J. 2005 December; 81(962): 777–779. doi: 10.1136/pgmj.2005.033605.PMCID: PMC1743403