1. 1Amsterdam UMC, Vrije Universiteit Amsterdam, Department of Internal Medicine, Section of Endocrinology, Amsterdam Neuroscience, Amsterdam, the Netherlands
2. 2Department of Pathology, Universitair Medisch Centrum Utrecht, Utrecht, the Netherlands
3. 3Division of Endocrinology and Metabolism, Department of Internal Medicine, Erasmus Medical Center, Rotterdam, the Netherlands
4. 4Radboud University Medical Center, Division of Endocrinology, Department of Internal Medicine, Nijmegen, the Netherlands