1. Shock, Organ Dysfunction and Resuscitation Research Group, Vall d'Hebron Institut de Recerca (VHIR), Vall d'Hebron Hospital Universitari, Barcelona, Spain
2. Department of Intensive Care, Hospital Clínic de Barcelona, Barcelona, Spain
3. Department of Intensive Care, Vall d'Hebron Hospital Universitari, Vall d'Hebron, Barcelona, Spain
4. Department of Medicine, Universitat Autonoma de Barcelona, Bellaterra, Barcelona, Spain