DOI:
10.1055/s-00028832
Arquivos Brasileiros de Neurocirurgia: Brazilian Neurosurgery
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References
Berkman ND, Lohr K, Ansari MT , et al.
Grading the Strength of a Body of Evidence When Assessing Health Care Interventions for the Effective Health Care Program of the Agency for Healthcare Research and Quality: An Update.
AHRQ Publication No. 13(14)-EHC130-EF. Rockville, MD: Agency for Healthcare Research and Quality; November 2013.
http://effectivehealthcare.ahrq.gov
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