1 Cardiovascular Surgery, Hospital CLINIC de Barcelona, Universitat de Barcelona, Barcelona, Spain; Institut d'investigacions Biomèdiques August Pi i Sunyer, IDIBAPS, Barcelona, Spain.
2 Institut d'investigacions Biomèdiques August Pi i Sunyer, IDIBAPS, Barcelona, Spain; Department of Respiratory Medicine, Hospital CLINIC de Barcelona, Universitat de Barcelona, Barcelona, Spain.
3 Institut d'investigacions Biomèdiques August Pi i Sunyer, IDIBAPS, Barcelona, Spain; Department of Anesthesia and Intensive Care, Hospital CLINIC de Barcelona, Universitat de Barcelona, Barcelona, Spain. Electronic address: [email protected].