BAYSAL Çağlar, DAĞLI Ülkü, TEZEL A, SERİN A, ÜLKER A. Interobserver variation of endoscopic activity index in ulcerative colitis. Turkish Journal of Gastroenterology [Internet]. 1997 Jan. 2 [cited 2026 Jan. 1];8(2):232-6. Available from: https://turkjgastroenterol.org/index.php/tjg/article/view/790