M. F. . Amir, R. Sultana, S. Z. Rasheed, N. . Rashid, and S. M. A. . Ahmed, “EXERCISE TOLERANCE TEST (ETT), AN EFFECTIVE TOOL FOR PREVELANCE AND ESTIMATION OF CORONARY HEART DISEASE”, Pak Heart J, vol. 55, no. Supplement1, p. S18, Nov. 2022.