5Brown KA. Prognostic value of cardiac imaging in patients with known or suspected coronary artery disease: comparison of myocardial perfusion imaging, stress echocardiography, and positron emission tomography. Am J Cardiol, 1995; 75: 350.
6McNeill AJ, Fioretti PM, EI - Said M, et al. Enhanced sensitivity for detection of coronary artery disease by additon of atropine to dobutamine ,stress echocardiography. Am J Cardiol, 1992; 70:41.
7Fioretti PM,Poldermans D,Salustri A,et al. Atrpine increases the accuracy of dobutamine stress echocardiography. Eur Heart J,1994;15:355.