Definition, Classification and Diagnosis of Diabetes Mellitus - Petersmann, Astrid; Müller-Wieland, Dirk; Müller, Ulrich A; Landgraf, Rüdiger; Nauck, Matthias; Freckmann, Guido; Heinemann, Lutz; Schleicher, Erwin (Experimental and clinical endocrinology & diabetes, 2019)