1 Medical lntensive Care Unit, Hospital Clínic of Barcelona, Barcelona, Spain.
2 Department of Biomedical Research Institute August Pi Sunyer (IDIBAPS), Hospital Clínic of Barcelona, Barcelona, Spain.
3 Department of Fundamental Care and Medical-Surgical Nursing, Nursing School of Faculty of Medicine and Health Sciences University of Barcelona, Barcelona, Spain.
4 Faculty of Medicine and Health Sciences University of Barcelona, Barcelona, Spain.
5 Department of Nursing Research Group (GRIN), Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Spain.
6 International Research Project for the Humanization of Health Care, Proyecto HU-CI, Madrid, Spain.