Erkan PARLAK, Aysel ÜLKER, Canan ALKIM, Bilge TUNÇ, Ahmet TEZEL, and Ülkü DAĞLI. 2019. “The Efficacy of 5-ASA Preparations in Prevention of Postoperative Recurrence of Crohn’s Disease (Retrospective Assesstment)”. Turkish Journal of Gastroenterology 10 (3):276-79. https://turkjgastroenterol.avesjournals.com/index.php/tjg/article/view/1594.