Aravind P, and Shivanshu Misra. “Endoscopic Biopsy Yielding Upper Gastrointestinal Malignancies”. International Journal of Health and Clinical Research 4, no. 8 (April 29, 2021): 269–272. Accessed April 9, 2026. https://ijhcr.com/index.php/ijhcr/article/view/1466.