[1] Heidelberg Univ, Med Fac Mannheim, Med Clin Nephrol Hypertensiol Endocrinol Diabet &, D-68167 Mannheim, Germany
[2] Univ Clin Hamburg Eppendorf, Outpatient Clin Endocrinol & Metab, Hamburg, Germany
[3] Med Univ Innsbruck, Sect Genet Epidemiol, Dept Med Genet & Mol & Clin Pharmacol, A-6020 Innsbruck, Austria
[4] Univ Zurich Hosp, Inst Clin Chem, CH-8091 Zurich, Switzerland
[5] Reg Hosp Bregenz, Dept Internal Med, Bregenz, Austria
[6] Univ Cologne, Ctr Endocrinol Diabet & Prevent Med, D-50931 Cologne, Germany
[7] Med Hlth Care Ctr Kempten Allgau, Kempten, Germany
[8] Univ Ulm, Med Ctr, Dept Internal Med Cardiol 2, D-89069 Ulm, Germany
[9] Med Univ, Ctr Mol Med, Inst Mol Biol & Biochem, Graz, Austria
[10] Univ Zurich Hosp, Cardiol Clin, CH-8091 Zurich, Switzerland
[11] Univ Clin Saarland, Clin Internal Med Cardiol Angiol & Med Intens Car, Homburg, Germany
[12] Kidney Ctr Mannheim, Mannheim, Germany
[13] Med Univ Graz, Clin Inst Med & Chem Lab Diagnost, A-8036 Graz, Austria
[14] Synlab Serv GmbH, Synlab Acad, D-68165 Mannheim, Germany
[15] Univ Munich, Med Clin 2, Munich, Germany
[16] Paracelsus Med Private Univ, LKH Salzburg Univ Clin, Univ Clin Internal Med, Salzburg, Austria
[17] UFL Private Univ Principal Liechtenstein, Triesen, Liechtenstein
[18] Univ Clin Giessen & Marburg, Clin Internal Med Cardiol, Marburg, Germany
[19] Charite, D-13353 Berlin, Germany
[20] Evangel Geriatr Ctr, Berlin, Germany
[21] Univ Bonn, Teaching Hosp, Dept Internal Med, Sankt Nikolaus Stiftshosp GmbH, Andernach, Germany
[22] Med Univ, Dept Internal Med, Graz, Austria
[23] Univ Clin, Med Clin & Policlin 1, Wurzburg, Germany
[24] Univ Clin Hamburg Eppendorf, Univ Heart Ctr, Clin & Policlin Gen & Invas Cardiol, Hamburg, Germany