RT Journal Article SR Electronic T1 Unsafety JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 95 OP 95 DO 10.3399/bjgp13X663154 VO 63 IS 607 A1 Trisha Greenhalgh YR 2013 UL http://bjgp.org/content/63/607/95.abstract AB