Trends in diabetes medication use in Australia, Canada, England, and Scotland: a repeated cross-sectional analysis in primary care Por Greiver, M, Havard, A, Bowles, JK, Kalia, S, Chen, T, Aliarzadeh, B, Moineddin, R, Sherlock, J, Hinton, W, de Lusignan, S, Sullivan, F, O'Neill, B, Pow, C, Bhatt, A, Rahman, F, Meza-Torres, B, Litchfield, M