Ujala, Mahwish, et al. “ROLE OF CARDIAC REHABILITATION IN IMPROVING HEALTH STATUS & QUALITY OF LIFE OF HEART FAILURE PATIENTS- A RANDOMISED CONTROLLED TRIAL”. Pakistan Armed Forces Medical Journal, vol. 72, no. SUPPL-1, Feb. 2022, pp. S16-20, https://pafmj.org/PAFMJ/article/view/8236.