Pandora Pound, Shah Ebrahim, Peter Sandercock, Michael B Bracken, Ian Roberts BMJ. 2004;328:514-517. doi: 10.1136/bmj.328.7438.514 https://www.bmj.com/lookup/doi/10.1136/bmj.328.7438.514 Library Collection(s) Translation and validation Download Citation BibTeX EndNote X3 XML EndNote 7 XML EndNote tagged Marc RIS