Pragati, U, Jaiprakash Yogi, Bushra Fiza, and Maheep Sinha. “Evolution of Serum Carcinoembryonic Antigen in Head and Neck Carcinoma Patients”. International journal of health sciences 6, no. S5 (June 21, 2022): 3403–3409. Accessed August 18, 2024. https://sciencescholar.us/journal/index.php/ijhs/article/view/9374.