Ambad, Ranjit S. “Use of Tumor Marker and Enzymes in Recurrence and Monitoring Response to Pre and Post Chemotherapy for Patients With Upper Gastrointestinal Carcinoma”. International Journal of Innovative Research in Medical Science 2, no. 08 (September 25, 2017): 1154 to 1163. Accessed December 16, 2024. https://ijirms.in/index.php/ijirms/article/view/306.