Longitudinal Change in HbA1c in Patients with Type 2 Diabetes: Comparison of Short-acting, Biphasic and Basal Insulin - Rathmann, W.; Strassburger, K.; Kostev, K.; Schröder-Bernhardi, D.; Giani, G.; Happich, M. (Experimental and Clinical Endocrinology & Diabetes, 2009)