Kruger J, Brennan A, Thokala P, Basarir H, Jacques R, Elliott J, Heller S, Speight J. The cost-effectiveness of 5-week versus 1-week DAFNE structured education in type 1 diabetes: a preliminary evaluation using the Sheffield type 1 diabetes policy model. Diabet Med. 2013 Oct;30(10):1236-44. doi: 10.1111/dme.1227