Dr. D.P. Lakra, Dr. M. Khande, and Dr. Nidhi Jacob, “Evaluation of The Utility of Serum Carcinoembryonic Antigen (Cea) Level as A Novel Biomarker in Acute Coronary Syndrome and Stable Angina”, ijpbs, vol. 14, no. 4, pp. 13–17, Dec. 2023.