American Society of Nuclear Cardiology and Society of Nuclear Medicine joint position statement: Attenuation correction of myocardial perfusion SPECT scintigraphy. - Heller,G.V.; Links,J.; Bateman,T.M.; Ziffer,J.A.; Ficaro,E.; Cohen,M.C.; Hendel,R.C. (J Nucl Cardiol, 2004)