1. Department of Acute Medicine, Hillingdon Hospital, Uxbridge, United Kingdom
2. School of Medicine, Imperial College
London, London, United Kingdom
3. Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht,
Netherlands
4. Department of Medicine, Darent Valley Hospital, Dartford, Kent, United Kingdom
5. Chelsea and
Westminster Hospital, London, United Kingdom
6. Royal Brompton and Harefield Hospital, Harefield Hospital, London,
United Kingdom