RT Journal Article SR Electronic T1 The diagnostic value of symptoms for colorectal cancer in primary care JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 440 OP 440 DO 10.3399/bjgp11X583119 VO 61 IS 588 A1 Bruce Arroll YR 2011 UL http://bjgp.org/content/61/588/440.2.abstract AB