1. University of Oxford, NDORMS, Oxford, OX3
7HE, UK.
2. University of Liverpool, Liverpool, Institute
of Translational Medicine, Liverpool, L12
2AP, UK.
3. University of Manchester, Trauma
Audit and Research Network, Salford, Manchester, M6
8HD, UK.
4. Harvard Medical School, Center
for Surgery and Public Health, Boston, MA
02115, USA.
5. University of Sheffield, School
of Health and Related Research, Sheffield, S1
4DA, UK.