RT Journal Article SR Electronic T1 Evans I, Thornton H, Chalmers I. Testing treatments. better research for better healthcare. London: The British Library, 2006. ISBN 0 712 3 4909 X. JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 91 OP 91 DO 10.1136/ebm.12.3.91 VO 12 IS 3 A1 Franz Porzsolt YR 2007 UL http://ebm.bmj.com/content/12/3/91.abstract AB