DOI:
10.1055/s-00042410
Revista Brasileira de Ortopedia
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References
Wells GA, Shea B, O'Connell D, Peterson J, Welch V, Losos M, Tugwell P.
The Newcastle-Ottawa scale (NOS) for assessing the quality of nonrandomised studies in meta-analyses.
2009 . Available from:
http://www.ohrica/programs/clinical epidemiology/oxford
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