[1] Heinrich Heine Univ, Leibniz Ctr Diabet Res, German Diabet Ctr, Inst Biometr & Epidemiol, Dusseldorf, Germany
[2] Partner Duesseldorf, German Ctr Diabet Res DZD, Munich, Germany
[3] Heinrich Heine Univ, Ctr Hlth & Soc, Med Fac, Dusseldorf, Germany
[4] Heinrich Heine Univ, Univ Hosp Duesseldorf, Dusseldorf, Germany
[5] Heinrich Heine Univ, Leibniz Ctr Diabet Res, Inst Clin Diabetol, German Diabet Ctr, Dusseldorf, Germany
[6] Univ Hosp Heidelberg, Internal Med & Clin Chem 1, Heidelberg, Germany
[7] Univ Hosp Dusseldorf, Dept Endocrinol & Diabetol, Med Fac, Dusseldorf, Germany
[8] Franziskus Hosp Harderberg, Niels Stensen Hosp, Dept Internal Med & Gastroenterol, Georgsmarienhutte, Germany
[9] Univ Kiel, Inst Epidemiol, Kiel, Germany