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Letters Open access publishing

And now, e-publication bias

BMJ 2010; 340 doi: (Published 28 April 2010) Cite this as: BMJ 2010;340:c2243
  1. Ane Krag Jakobsen, MD1,
  2. Robin Christensen, senior biostatistician2,
  3. Robert Persson, MD3,
  4. Else Marie Bartels, senior research librarian2,
  5. Lars Erik Kristensen, MD4
  1. 1Department of Urology, Roskilde University Hospital, 4000 Roskilde, Denmark
  2. 2Parker Institute: Musculoskeletal Statistics Unit, Copenhagen, Denmark
  3. 3Eden Primary Care Unit, Region Skåne, Malmö, Sweden
  4. 4Department of Clinical Sciences, Lund, Section of Rheumatology, Lund University, Lund, Sweden
  1. anekrag{at}

    In open access publishing scholarly communication is made available free of charge on the internet. In biomedical research, authors or sponsors often pay a fee to a publisher to enable immediate free online access.1 2 A few journals operate entirely under this model, whereas others use a hybrid model allowing authors to choose between subscription access and author-paid …

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