[1] Univ Sao Paulo, Hosp Clin, Fac Med, Div Neurol, Sao Paulo, SP, Brazil
[2] Univ Sao Paulo, Hosp Clin, Fac Med, Inst Crianca,Unidade Dor & Cuidados Paliat, Sao Paulo, SP, Brazil
[3] Univ Sao Paulo, Hosp Clin, Fac Med, Dept Emergencias Clincias, Sao Paulo, SP, Brazil
[4] Hosp Sirio Libanes, Nucleo Cuidados Paliat, Sao Paulo, SP, Brazil