M. F. Khanzada, Z. Mumtaz, A. Mueed, S. A. Shaikh, S. H. R. Naqvi, and F. Qadir, “SUCCESSFUL PERFORMANCE OF CARDIAC ELECTROPHYSIOLOGICAL PROCEDURES VIA A CONGENITAL INFERIOR VENA CAVA ANOMALY- REPORT OF 2 CASES”, Pak Heart J, vol. 53, no. 1, May 2020.