Hussain, Fida, et al. “IMPACT AND OUTCOME OF MAXIMUM BICYCLE ERGOMETER EXERCISE ON ADENOSINE TC-99M SESTAMIBI MYOCARDIAL PERFUSION IMAGING IN CORONARY ARTERY DISEASE”. Pakistan Armed Forces Medical Journal, vol. 66, no. SUPPL-1, Mar. 2022, pp. S19-25, https://www.pafmj.org/PAFMJ/article/view/8322.