Waseem N, . I, Khan A, Malik A, Khan RA. FREQUENCY OF EARLY ATRIAL FIBRILLATION IN POST MITRAL VALVE REPLACEMENT SURGERY. J Postgrad Med Inst [Internet]. 2016 Apr. 28 [cited 2024 Nov. 22];30(2). Available from: https://jpmi.org.pk/index.php/jpmi/article/view/1894