[1] Helmholtz Ctr Munich, Forschergrp Diabet eV, Ingolstaedter Landstr 1, D-85764 Munich, Germany
[2] Clin Cty Emergency Hosp Constanta, Internal Med Dept, Tomis Blvd 145, Constanta 900591, Romania
[3] IRCCS MultiMed, Diabet & Metab Dis Unit, Via Milanese 300, I-20099 Sesto San Giovanni, MI, Italy
[4] Univ Belgrade, Clin Endocrinol Diabet & Metab Dis, Clin Ctr Serbia, Fac Med, Belgrade 11000, Serbia
[5] Charles Univ Prague, Dept Internal Med 3, Fac Med 1, U Nemocnice 1, Prague 12808 2, Czech Republic
[6] Univ Paris 13, Dept Endocrinol Diabetol Nutr, Hop Jean VERDIER, CINFO,CRNH IdF, Ave 14 Juillet, F-93140 Bondy, France
[7] Inst Invest Biomed August Pi & Sunyer IDIBAPS, Mallorca 183, Barcelona 08036, Spain