RT Journal Article SR Electronic T1 RULE NUMBER ONE JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 857 OP 857 DO 10.3399/bjgp10X539371 VO 60 IS 580 A1 Fiona Dowson YR 2010 UL http://bjgp.org/content/60/580/857.abstract AB