[1] Univ Med Cntr Hamburg, Hamburg, Germany
[2] Univ Med Greifswald, Inst Clin Chem & Lab Med, Greifswald, Germany
[3] Univ Med Greifswald, Interfac Inst Genet & Funct Genom, Greifswald, Germany
[4] German Cntr Cardiovasc Rsch, Gottingen, Germany
[5] Univ Med Greifswald, Dept SHIP Clin Epidemiol, Inst Community Med, Greifswald, Germany
[6] Univ Med Greifswald, Dept Cardiol, Greifswald, Germany