[1] Univ Sao Paulo, Sch Nursing, 419 Eneas de Carvalho Aguiar Ave, BR-05453000 Sao Paulo, Brazil
[2] Univ Sao Paulo, Sch Nursing, Dept Med Surg Nursing, Sao Paulo, Brazil
[3] Copenhagen Univ Hosp, Rigshosp, Dept Oncol, Copenhagen, Denmark
[4] Copenhagen Univ Hosp, Rigshosp, Multidisciplinary Pain Ctr, Copenhagen, Denmark
[5] Copenhagen Univ Hosp, Rigshosp, Dept Oncol, Palliat Med, Copenhagen, Denmark
[6] Univ Copenhagen, Fac Hlth & Med Sci, Dept Clin Med, Copenhagen, Denmark