RT Journal Article SR Electronic T1 Response to: ‘Synthetic control methodology as a tool for evaluating population-level health interventions’ by Bouttell et al JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP jech-2018-211037 DO 10.1136/jech-2018-211037 A1 Frank de Vocht A1 Colin Angus A1 Kate Tilling A1 Alan Brennan A1 Matthew Hickman YR 2018 UL http://jech.bmj.com/content/early/2018/06/10/jech-2018-211037.abstract AB