Additional file 3.
Table S3. Modified Quality Assessment of Diagnostic Accuracy Studies (QUADAS) grading of studies referring 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?'. CT = computed tomography.
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Undén et al. BMC Medicine 2013 11:50 doi:10.1186/1741-7015-11-50