Grunau B, Leipsic J, Purssell E, Kasteel N, Nguyen K, Kazem M, Naoum C, Raju R, Blanke P, Heilbron B, Taylor C, Scheuermeyer FX. Comparison of rates of coronary angiography and combined testing procedures in patients seen in the emergency room with chest pain (but no objective acute coronary syndrome findings) having coronary computed tomography versus exercise stress testing. Am J Cardiol. 2016 Jul 15;118(2):155-61. doi:10.1016/j.amjcard.2016.04.051. Epub 2016 May 4.