1 Department of Critical Care, D'Or Institute for Research and Education, Rio de Janeiro CEP 22281-100, Brazil; Internal Medicine Department, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil. Electronic address: jorgesalluh@gmail.com.
2 Department of Critical Care, D'Or Institute for Research and Education, Rio de Janeiro CEP 22281-100, Brazil; Internal Medicine Department, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
3 Bloomsbury Institute of Intensive Care Medicine, Division of Medicine, University College London, London, UK.