RT Journal Article SR Electronic T1 Fishing JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 238 OP 238 DO 10.3399/bjgp16X684937 VO 66 IS 646 A1 Oliver Penney YR 2016 UL http://bjgp.org/content/66/646/238.2.abstract AB