1. Departments of Pharmacy and Critical Care, John Radcliffe Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
2. Departments of Pharmacy and Critical Care, Whiston Hospital, St Helens and Knowsley Teaching Hospitals NHS Trust, Prescot, UK
3. Departments of Pharmacy and Critical Care, Sheffield Teaching Hospitals NHS Foundation Trust, Northern General Hospital, Sheffield, UK
4. Departments of Pharmacy and Critical Care, St Thomas’ Hospital, Guy's and St Thomas’ NHS Foundation Trust, London, UK