Palliative care in the pre-hospital service in Brazil: experiences of health professionals - Boaventura, Jacqueline Resende; Pessalacia, Juliana Dias Reis; Ribeiro, Aridiane Alves; Bolela, Fabiana; Silva Neto, Priscila Kelly da; Marinho, Maristela Rodrigues (BMC Palliative Care, 2022)