Features and outcomes of rectal cancer patients treated in a hospital in Bogotá, Colombia: a retrospective cohort study oleh Julián Andres Romo, Carlos Edgar Figueroa Avendaño, Laura A. López, Natalia Mesa, Alejandro González-Muñoz, David Baquero, Andrea Recamán, Fernando Rabeya, Alejandro Villabon, Isabella Velandia Sánchez, Álvaro Flechas