1. Department of Clinical Chemistry , University Hospital of Liège , CHU Sart-Tilman , Liège , Belgium , Phone: +32 4 366 88 21, Fax: +32 4 366 88 23
2. Department of Physical Medicine and Sport Traumatology , University of Liège , Liège , Belgium
3. Department of Clinical Chemistry , University Hospital of Liège , Liège , Belgium
4. Department of Cardiology , University Hospital of Liège , Liège , Belgium
5. Biostatistics Department , University Hospital of Liège , Liège , Belgium