DOI:
10.1055/s-00000099
Zeitschrift für Orthopädie und Unfallchirurgie
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References
Guyatt GH, Sackett DL, Sinclair JC. et al.
Usersʼ guides to the medical literature. IX. A method for grading health care recommendations. Evidence-Based Medicine Working Group.
JAMA 1995;
274: 1800-1804
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