SARIÇAM, Tülay, Eser VARDARELİ, Ayşegül HARMANCI, Yekta KIŞIOĞLU, Nur KEBAPÇI, and Esat ERENOĞLU. 1994. “MALIGNANCIES DETERMINED BY UPPER GASTROINTESTINAL SYSTEM ENDOSCOPY IN 1400 CASES”. Turkish Journal of Gastroenterology 5 (2):275-79. https://www.turkjgastroenterol.org/index.php/tjg/article/view/423.