Hafsa Khalil, et al. “A COMPARATIVE STUDY OF CYANOTIC & ACYANOTIC PATIENT’S OUTCOMES IN A POSTOPERATIVE INTENSIVE CARE UNIT AT AFIC NIHD”. Pakistan Armed Forces Medical Journal, vol. 67, no. SUPPL-2, Apr. 2017, pp. S221-26, https://pafmj.org/PAFMJ/article/view/11916.