1. Faculty of Medicine, Universidade Federal de Pelotas, Pelotas, Brazil.
2. Department of Palliative Care, Hospital das Clínicas University of São Paulo Faculty of Medicine (HCFMUSP), Sao Paulo, Brazil.
3. Santa Casa de Sao Paulo School of Medical Sciences, Sao Paulo, Brazil.
4. Faculty of Nursing, Universidade Federal do Maranhão, Sao Luis, Brazil.