MALIGNANCIES DETERMINED BY UPPER GASTROINTESTINAL SYSTEM ENDOSCOPY IN 1400 CASES - SARIÇAM, Tülay; VARDARELİ, Eser and HARMANCI, Ayşegül and KIŞIOĞLU, Yekta and KEBAPÇI, Nur and ERENOĞLU, Esat (Turkish Journal of Gastroenterology, 1994)