Hashmi, M. et al. 2023. Sensitivity of Carcinoembryonic Antigen Level in Head and Neck, Breast, Lung, Genitourinary, Gastrointestinal Carcinoma. Pakistan Armed Forces Medical Journal. 73, 3 (Jun. 2023), 917–20. DOI:https://doi.org/10.51253/pafmj.v73i3.6245.