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BMJ 2000; 320 doi: https://doi.org/10.1136/bmj.320.7229.257/a (Published 22 January 2000) Cite this as: BMJ 2000;320:257
British National Formulary No 38 (September 1999)
BMA/Royal Pharmaceutical Society
£15.95, ISBN 0 85369 438 9
How to Read a Paper: The Basics of Evidence-Based Medicine
T Greenhalgh
BMJ Books, £15.95, ISBN 0 7279 1139 2
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