Tworowska, Urszula Tworowska-Bardzińska, Urszula Tworowska-Bardzińska, Urszula, Department of Endocrinology, Diabetology and Isotope Therapy, Wroclaw Medical University, Wroclaw, Poland Tymińska, Agata Tyrakowski, Tomasz Tyrpień-Golder, Krystyna, School of Medicine with the Division of Dentristy in Zabrze, Department of Chemistry, Silesian Medical University, Katowice, Poland Tyrpień-Golder, Krystyna, Department of Chemistry, Faculty of Medicine and Division of Dentistry, Medical University of Silesia, Zabrze, Poland. Tysarowski, Andrzej Tyszkiewicz, Tomasz Tyszkiewicz, Tomasz Tyszkiewicz, Tomasz (Poland) Tywanek, Ewa Tłuczykont, Marek Uchman, Dorota Ugrin, Milena Ugurlu, Levent, Department of General Surgery, Tepecik Education and Research Hospital, Izmir. Uhlyarik, Andrea Ulańska, Anna Ulatowska-Białas, Magdalena Ulgu, Mustafa Mahir Ulucanlar, Haluk Uludag, Irem fatma, Department of Neurology, S.B. Tepecik Training and Research Hospital, Izmir-Turkey Umiński, Marek Unal, Hilmi Umut under the patronage of Diabetes Poland, for the ARETAEUS-2 Study Group