We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.
Online ordering will be unavailable from 17:00 GMT on Friday, April 25 until 17:00 GMT on Sunday, April 27 due to maintenance. We apologise for the inconvenience.
Hostname: page-component-669899f699-qzcqf
Total loading time: 0
Render date: 2025-04-26T01:01:33.539Z
Has data issue: false
hasContentIssue false
An abstract is not available for this content so a preview has been provided. As you have access to this content, a full PDF is available via the ‘Save PDF’ action button.
5.Sackett, DL, Rosenberg, WC, Gray, JAM, Haynes, RB, Richardson, WS. Evidence-based medicine: what it is and what it isn't. BMJ1996; 312: 71–2.CrossRefGoogle ScholarPubMed