IMPACT OF PATIENT COMORBIDITIES IN THE TREATMENT OUTCOMES OF RECTAL CANCER ACCORDING TO TUMOR LOCATION. Issue 2 (February 2022) - Sousa, Alexandre; Carvas, João; Canotilho, Rita; Baía, Catarina; Pinto, Paula; Correia, Ana Margarina; Martins, Pedro; Lencastre, Luis; Videira, Flávio; Abreu de Sousa, Joaquim