Affiliation: | (1) Faculty of Medicine and Medical Sciences, University of Aberdeen, West Block,Polwarth Building, Foresterhill, Aberdeen, AB25 2ZD, Scotland;(2) Health Services Research Unit, University of Aberdeen, West Block, Polwarth Building,Foresterhill, Aberdeen, AB25 2ZD, Scotland;(3) Grampian Local Health Council, Westburn House, Westburn Road,Foresterhill, Aberdeen, AB25 2XG, Scotland;(4) NHS Education (North Scotland), Forest Grove House, Foresterhill Road, Aberdeen, AB25 2ZP, Scotland |