[1] Akershus Univ Hosp, Med Div, EpiGen, N-1478 Lorenskog, Norway
[2] Univ Oslo, Inst Clin Med, Dept Clin Mol Biol, EpiGen, N-1171 Oslo, Norway
[3] Univ Leipzig, Helmholtz Inst Metab Obes & Vasc Res HI MAG, Helmholtz Zentrum Munchen, Leipzig, Germany
[4] Univ Hosp Leipzig, Leipzig, Germany