RT Journal Article SR Electronic T1 Art JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 652 OP 652 DO 10.3399/bjgp13X675502 VO 63 IS 617 A1 Claudia Pagliari YR 2013 UL http://bjgp.org/content/63/617/652.abstract AB