RT Journal Article SR Electronic T1 Rare diseases in general practice: recognising the zebras among the horses JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 550 OP 551 DO 10.3399/bjgp16X687625 VO 66 IS 652 A1 William RH Evans A1 Imran Rafi YR 2016 UL http://bjgp.org/content/66/652/550.abstract AB