1. Department of Perioperative Medicine and Intensive Care Karolinska University Hospital Stockholm Sweden
2. Department of Physiology and Pharmacology Karolinska Institutet Stockholm Sweden
3. Maquet Critical Care AB Solna Sweden
4. Department of Surgical Sciences Section of Anaesthesiology and Critical Care Hedenstierna’s Laboratory Uppsala University Uppsala Sweden
5. CIBER de Enfermedades Respiratorias Instituto de Salud Carlos III Madrid Spain
6. Department of Intensive Care medicine Hospital Universitario de La Princesa Madrid Spain