Aliano, Artigas, Federico Schneeberger, and Pablo Montandon. “Pean Billroth I Gastrectomy for Gastric Ulcer”. Cirugía del Uruguay 49, no. 6 (March 18, 1979): 493–495. Accessed May 26, 2026. https://replica-revista.scu.org.uy/index.php/cir_urug/article/view/3102.