Figure 2.

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 a head CT and which patients may be directly discharged?'.

Undén et al. BMC Medicine 2013 11:50   doi:10.1186/1741-7015-11-50
Download authors' original image