RT Journal Article SR Electronic T1 Getting a grip on guidelines: how to make them more relevant for practice JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP e143 OP e144 DO 10.3399/bjgp09X420554 VO 59 IS 562 A1 Richard Grol A1 Chris van Weel YR 2009 UL http://bjgp.org/content/59/562/e143.abstract AB