1. Polyvalent Intensive Care Unit, São Francisco Xavier Hospital, Centro Hospitalar De Lisboa Ocidental, Lisbon, Portugal
2. NOVA Medical School, CHRC, New University of Lisbon, Lisbon, Portugal
3. Intensive Care Unit, Hospital Nossa Senhora Da Conceição, Porto Alegre, Brazil
4. Critical Care Department, Hospital De Clínicas De Porto Alegre, Post-Graduation Program (PPG) Pneumology,Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
5. D’or Institute for Research and Education, Rio De Janeiro, Brazil
6. Center for Clinical Epidemiology and Research Unit of Clinical Epidemiology, OUH Odense University Hospital, Denmark