Article Information
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History
- Published online May 1, 2007.
Copyright & Usage
© British Journal of General Practice, 2007.
Author Information
- Michael Campbell, Professor, Director of Health Services Research, Editor Statistics in Medicine
- Jenny V Freeman, Lecturer in Medical Statistics
- Medical Statistics Group, ScHARR, Regent's Court, Sheffield. E-mail: M.J.Campbell@sheffield.co.uk
- Medical Statistics Group, ScHARR, Regent's Court, Sheffield