Luongo, Alvaro, Sergio Aguiar, Luis González Machado, José Guerra, Carlos Michelenea, Hugo Bisio, Claudio Ruiz Liard, et al. 1993. “Treatment of Locally Advanced Rectal Cancer With Radiation Therapy and Preoperative Chemotherapy”. Cirugía Del Uruguay 63 (4-5-6):150-53. https://replica-revista.scu.org.uy/index.php/cir_urug/article/view/4228.