1 Department of Adult Critical Care, Guy's and St Thomas' NHS Foundation Trust, Health Centre for Human and Applied Physiological Sciences, King's Health Partners, King's College London, 6th Floor East Wing, Westminster Bridge Road, London, SE1 7EH, UK.
2 Department of Anaesthesiology, Emergency and Intensive Care Medicine, University of Göttingen, Göttingen, Germany.
3 Department of Adult Critical Care, Guy's and St Thomas' NHS Foundation Trust, Health Centre for Human and Applied Physiological Sciences, King's Health Partners, King's College London, 6th Floor East Wing, Westminster Bridge Road, London, SE1 7EH, UK. [email protected].