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  1. ..., Lancet, British Medical Journal , JAMA , and New England Journal Medicine have a high impact factor . Often abbreviated IF.

    1 Answers · Education & Reference · 27/02/2011

  2. ... the most widely circulated medical journal in the world. The online version is... in developing countries. JAMA 's 2009 impact factor is 28.9 (the impact factor is a measure...

    1 Answers · Education & Reference · 25/02/2011

  3. ...http://en.wikipedia.org/wiki/ Impact _ factor It looks... England Journal of Medicine and..., and NEJM and JAMA in the United ...

    2 Answers · Education & Reference · 30/09/2009

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