Burns, EJ, Hargreaves, S, Ure, CM, Hare, S, Coffey, M, Hidajat, M, Audrey, S, de Vocht, F, Ardern, K, Cook, PA, "‘A priori’ external contextual factors and relationships with process indicators: a mixed methods study of the pre-implementation phase of ‘Communities in Charge of Alcohol’", BMC Public Health, 2022