1 Medical ICU, Disciplina de Emergências Clínicas, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil. brunobesen@yahoo.com.br.
2 Intensive Care Unit, Hospital A.C. Camargo Cancer Center, São Paulo, SP, Brazil. brunobesen@yahoo.com.br.
3 Intensive Care Department, Ziekenhuis Oost Limburgh, Campus St Jan, Genk, Belgium.
4 Co-Director at the Intensive Care Dept of Brugmann University Hospital, Brussels, Belgium.
5 Faculty of Medicine, Professor at the ULB University, Brussels, Belgium.