RT Journal Article SR Electronic T1 Article missed published papers on GPAQ validity JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 918 OP 918 VO 57 IS 544 A1 Martin Roland A1 Peter Bower A1 Nicki Mead YR 2007 UL http://bjgp.org/content/57/544/918.3.abstract AB