RT Journal Article SR Electronic T1 January Focus JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 2 OP 2 DO 10.3399/bjgp08X263712 VO 58 IS 546 A1 David Jewell YR 2008 UL http://bjgp.org/content/58/546/2.abstract AB