1. Department of Endocrinology and Metabolism (A.A., A.K., E.F.), Academic Medical Center of the University of Amsterdam, 1105 AZ Amsterdam, The Netherlands;
2. Netherlands Institute for Neuroscience (A.K., D.F.S.), an Institute of the Royal Netherlands Academy of Arts and Science, 1105 BA Amsterdam, The Netherlands
3. Department of Internal Medicine (E.C.H.F., T.J.V.), Erasmus Medical Center, 3000 DR Rotterdam, The Netherlands;