López Chapuis, Daniel, et al. “Prognostic Factors for Early Failure of Arteriovenous Fistulas for Hemodialysis”. Cirugía Del Uruguay, vol. 63, no. 4-5-6, Apr. 1993, pp. 109-10, https://replica-revista.scu.org.uy/index.php/cir_urug/article/view/4168.