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As different as Venus and Mars: time to distinguish efficacy (can it work?) from effectiveness (does it work?)
  1. Correspondence to Dr Karim M Khan, Centre for Hip Health and Mobility & Department of Family Practice, University of British Columbia, Vancouver V6T 1Z3, Canada; karim.khan{at}ubc.ca
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Khan KM, Tunaiji HA
As different as Venus and Mars: time to distinguish efficacy (can it work?) from effectiveness (does it work?)

Publication history

  • Accepted June 20, 2011
  • First published July 10, 2011.
Online issue publication 
July 10, 2011

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