1. Do D, West JA, Morise A, Atwood E, Froelicher V. A consensus approach to diagnosing coronary artery disease based on clinical and exercise test data. Chest 1997;111:1742–1749. 2. Detrano R, Froelicher V. A logical approach to screening for coronary artery disease. Ann Intern Med 1987;106:846–852. 3. Lewis WR, Amsterdam EA. Utility and safety of immediate exercise testing of low-risk patients admitted to the hospital for suspected acute myocardial infarction. Am J Cardiol 1994;74:987–990. 4. Lewis WR, Amsterdam EA, Turnipseed S, Kirk JD. Immediate exercise testing of low risk patients with known coronary artery disease presenting to the emergency department with chest pain. Am Coll Cardiol 1999;33:1843– 1847. 5. Kirk JD, Turnipseed S, Lewis WR, Amsterdam EA. Evaluation of chest pain in low-risk patients presenting to the emergency department: the role of immediate exercise testing. Ann Emerg Med 1998;32:1–7. 6. Gauri AJ, Raxwal VK, Roux L, Fearon WF, Froelicher VF. Effects of chronotropic incompetence and beta-blocker use on the exercise treadmill test in men. Am Heart J 2001;142:136–141. 7. Wander GS, Pasricha S, Aslam N, Avasthi G, Mahajan R, Khurana SB. Should beta-blockers be withdrawn in post-myocardial infarction patients before treadmill test? Indian Heart J 1997;49:503–506. 8. Ades PA, Thomas JD, Hanson JS, Shapiro SM, LaMountain J. Effect of metoprolol on the sub-maximal stress test performed early after acute myocardial infarction. Am J Cardiol 1987;60:963–966. 9. Ashmore RC, Corkadel LK, Green CL, Horwitz LD. Verapamil but not nifedipine impairs left ventricular function during exercise in hypertensive patients. Am Heart J 1990;119:636–641. 10. Ho SW, McComish MJ, Taylor RR. Effect of beta-adrenergic blockade on the results of exercise testing related to the extent of coronary artery disease. Am J Cardiol 1985;55:258–262. 11. Pellinen TJ, Virtanen KS, Valle M, Frick MH. Studies on ergometer exercise testing. II. Effect of previous myocardial infarction, digoxin, and beta-blockade on exercise electrocardiography. Clin Cardiol 1986;9:499–507.