TY - JOUR T1 - Advance directives and cancer: oncology practices in Brazil JO - Revista Bioética A1 - Freitas, Eni Devay de A1 - Nunes, Rui SN - 1983-8042 UL - 10.1590/1983-803420233440PT VL - 31 Y1 - 2023 PB - Brazil ER -