QUALIDADE DE VIDA DE PACIENTES AMBULATORIAIS COM DOR CRÔNICA E CANCER GASTROINTESTINAL : QUALITY OF LIFE OF PATIENTS IN AMBULATORY CARE WITH CHRONIC PAIN AND GASTROINTESTINAL CANCER. Rev. Cont. Saúde. 2022;21(44):299-309. doi:10.21527/2176-7114.2021.44.9874