RT Journal Article SR Electronic T1 December Focus JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 834 OP 834 DO 10.3399/bjgp08X376140 VO 58 IS 557 A1 David Jewell YR 2008 UL http://bjgp.org/content/58/557/834.abstract AB