Author T. Staa B. Goldacre M. Gulliford J. Cassell M. Pirmohamed A. Taweel B. Delaney L. Smeeth Year of Publication 2012 DOI 10.1136/bmj.e55 DOIGoogle ScholarBibTeXEndNote X3 XMLEndNote 7 XMLEndnote taggedMarcRIS