1. Intensive Care Unit, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
2. Polyvalent Intensive Care Unit, Hospital S. Francisco Xavier, Centro Hospitalar de Lisboa Ocidental (CHLO), Lisbon, Portugal
3. Nova Medical School, CEDOC, New University of Lisbon, Portugal
4. Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
5. D’Or Institute for Research and Education, Rio de Janeiro, Brazil