RT Journal Article SR Electronic T1 The lost sheep JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 517 OP 517 DO 10.3399/bjgp17X693329 VO 67 IS 664 A1 Gervase Vernon YR 2017 UL http://bjgp.org/content/67/664/517.abstract AB