deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index 936aa86..2a4b251 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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pages = {470--479},  year = {1999},  }  @article{Higgins_2011,  doi = {10.1136/bmj.d5928},  url = {http://dx.doi.org/10.1136/bmj.d5928},  year = {2011},  month = {oct},  publisher = {{BMJ}},  volume = {343},  number = {oct18 2},  pages = {d5928--d5928},  author = {J. P. T. Higgins and D. G. Altman and P. C. Gotzsche and P. Juni and D. Moher and A. D. Oxman and J. Savovic and K. F. Schulz and L. Weeks and J. A. C. Sterne},  title = {{The Cochrane Collaboration{\textquotesingle}s tool for assessing risk of bias in randomised trials}},  journal = {{BMJ}},  }