Pulcini, A., G. Guerriero, E. Masci, D. Feroci, F. Stio, and L. Giacomelli. “SIGMA’S STENOSIS. CLINICAL, DIAGNOSTIC AND THERAPEUTICAL PROBLEMS”. Annali Italiani di Chirurgia 75, no. 5 (September 1, 2004): 559–562. Accessed April 27, 2024. https://annaliitalianidichirurgia.it/index.php/aic/article/view/2564.