(2013-09-11) Hoskins, Gaylor; Abhyankar, Purva; Taylor, Anne D; Duncan, Edward; Sheikh, Aziz; Pinnock, Hilary; van der Pol, Marjon; Donnan, Peter T; Williams, Brian; University of Aberdeen.Health Economics Research Unit; University of Aberdeen.Computing Science; University of Aberdeen.Grampian Data Safe Haven (DaSH); University of Aberdeen.Institute of Applied Health Sciences