TY - JOUR T1 - A lack of a comparator group makes it hard to be sure whether computerised medical record system implementation achieved a better or worse outcome JF - BMJ Health & Care Informatics SP - 485 LP - 487 DO - 10.14236/jhi.v23i1.867 VL - 23 IS - 1 AU - Simon de Lusignan AU - John Williams AU - William Hinton AU - Neil Munro Y1 - 2016/01/01 UR - http://informatics.bmj.com/content/23/1/485.abstract ER -