Pellicano, R., R. Sostegni, and C. Sguazzini et al. 2011. “A Rare Location of Crohn’s Disease: The Nasal Mucosa”. Acta Biomedica Atenei Parmensis 82 (1): 82-84. https://www.mattioli1885journals.com/index.php/actabiomedica/article/view/1370.