1. Department of Epidemiology and Biostatistics (F.J.d.J., T.d.H., A.H., A.G.U., M.M.B.B.), Erasmus Medical Center, 3000 DR Rotterdam, The Netherlands
2. Department of Neurology (F.J.d.J., T.d.H.), Erasmus Medical Center, 3000 DR Rotterdam, The Netherlands
3. Department of Internal Medicine (R.P.P., W.M.v.d.D., A.G.U., T.J.V.), Erasmus Medical Center, 3000 DR Rotterdam, The Netherlands
4. Department of Clinical Chemistry (A.G.U.), Erasmus Medical Center, 3000 DR Rotterdam, The Netherlands