Improving the cost-effectiveness of photographic screening for diabetic macular oedema: A prospective, multi-centre, UK study - Prescott, G; Sharp, P; Goatman, K; Scotland, G; Fleming, A; Philip, S; Staff, R; Santiago, C; Borooah, S; Broadbent, D; Chong, V; Dodson, P; et al. (British Journal of Ophthalmology, 2014)