H. Ahmad, M. A. Bilal Awan, I. Hassan, M. I. Khan, I. Iqbal, and S. Zada, “Post Operative Hyperbilirubinemia after Cardiac Surgery: A Cross-Sectional Study in National Institute of Cardiovascular Diseases, Karachi”, IJBR, vol. 3, no. 6, pp. 474–478, Jun. 2025.