RT Journal Article SR Electronic T1 Commentary JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 376 OP 376 DO 10.3399/bjgp09X420734 VO 59 IS 562 A1 Helen Lester YR 2009 UL http://bjgp.org/content/59/562/376.2.abstract AB