Intended for healthcare professionals

Letters Key opinion leaders

How to spot one

BMJ 2008; 337 doi: (Published 15 July 2008) Cite this as: BMJ 2008;337:a790
  1. Alexander S D Spiers, professor of medicine (retired)
  1. 1Cookham Dean, Berkshire
  1. spiersuk{at}

    The key opinion leader may be an independent expert or a drug company representative in disguise, but not both at once. …

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