PARLAK, E. (2000) “Is determination of initial attack severity predictive for long-term prognosis in patients with total ulcerative colitis?”, Turkish Journal of Gastroenterology, 11(3), pp. 231–234. Available at: https://www.turkjgastroenterol.org/index.php/tjg/article/view/1080 (Accessed: 1 January 2026).