Zghebi, SS, Panagioti, M, Rutter, MK, Ashcroft, DM, van Marwijk, H, Salisbury, C, Chew-Graham, CA, Buchan, I, Qureshi, N, Peek, N, Mallen, C, Mamas, M, Kontopantelis, E, "A systematic review of measures using clinical data for assessing the severity of Type 2 diabetes", ,