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Perspective

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Grading Quality of Evidence and Strength of Recommendations: A Perspective

  • Mohammed T. Ansari mail,

    moansari@ohri.ca

    Affiliation: Ottawa Methods Centre, Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Canada

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  • Alexander Tsertsvadze,

    Affiliation: Ottawa Methods Centre, Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Canada

    X
  • David Moher

    Affiliations: Ottawa Methods Centre, Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Canada, Department of Epidemiology & Community Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Canada

    X
  • Published: September 15, 2009
  • DOI: 10.1371/journal.pmed.1000151

About the Authors

Mohammed T. Ansari, Alexander Tsertsvadze, David Moher
Ottawa Methods Centre, Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Canada
David Moher
Department of Epidemiology & Community Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Canada

Corresponding Author

Email: moansari@ohri.ca

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

ICMJE criteria for authorship read and met: MTA AT DM. Wrote the first draft of the paper: MTA. Contributed to the writing of the paper: MTA AT DM.