1. Laboratory of Experimental Medicine, Faculty of Medicine, Erasmus Hospital, Université Libre de Bruxelles, Brussels, Belgium
2. Division of Endocrinology, Erasmus Hospital, Université Libre de Bruxelles, Brussels, Belgium
3. Department of Medical Cell Biology, Uppsala University, Biomedicum, Uppsala, Sweden
4. Unit of Endocrinology and Metabolism, Faculty of Medicine, University of Louvain (UCL), Brussels, Belgium
5. Centre of Anatomy, Hannover Medical School, Hannover, Germany
6. Institute of Clinical Biochemistry, Hannover Medical School, Hannover, Germany