Grande, Elisabetta, Silvia Ferranti, Carla Gaggiano, Nicola di Virgilio, and Marina Vascotto. “Celiac Disease: Is It Really Possible to Overcome Duodenal Biopsy?”. Acta Bio Medica Atenei Parmensis 87, no. 1 (May 6, 2016): 97-100. Accessed October 25, 2020. https://mattioli1885journals.com/index.php/actabiomedica/article/view/4516.