Nkomo, V.T., Pellikka, P.A., Enriquez-Sarano, M. and McCully, R.B. 2017. When to use stress echocardiography in the evaluation of patients with valvular heart disease. SA Heart Journal. 7, 2 (Apr. 2017), 94–105. DOI:https://doi.org/10.24170/7-2-1951.