Figure 3.

Adapted Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) diagram showing the review process with reference to the clinical question: 'Which adult patients with minimal, mild and moderate head injury need in-hospital observation and/or a repeat head CT?'.

Undén et al. BMC Medicine 2013 11:50   doi:10.1186/1741-7015-11-50
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