Nafees, Syed Shahid, Kamal Saleem ., Inamullah Khan ., Nausheen Bakht ., and Iftikhar Ahmed . 2011. “EXPERIENCE OF FONTAN SURGERY AT ARMED FORCES INSTITUTE OF CARDIOLOGY NATIONAL INSTITUTE OF HEART DISEASES (AFIC-NIHD)”. Pakistan Armed Forces Medical Journal 61 (2): 160-63. https://pafmj.org/PAFMJ/article/view/162.