00541nas a2200181 4500000000100000008004100001100002100042700001200063700001600075700001800091700001900109700001600128700001400144700001600158700001800174245012300192250004400315 2013 d1 aStefansdottir G.1 aKnol M.1 aDe Bruin M.1 aWoodward Mark1 aZoungas Sophia1 aLeufkens H.1 aGrobbe D.1 aChalmers J.1 aPatel Anushka00aThe post hoc use of randomized controlled trials to explore drug associated cancer outcomes: methodological challenges a 8 November 2013 [Epub ahead of print]