1. Department of Internal Medicine I, Division of Endocrinology and Diabetes, University Hospital Würzburg, University of Würzburg, Würzburg, Germany
2. Medicover Oldenburg MVZ, Oldenburg, Germany
3. Department of Endocrinology, German Clinic of Diagnostics, Wiesbaden, Germany
4. Department of Neurosurgery, Johannes Wesling Hospital, University Hospital of the Ruhr-University Bochum, Minden, Germany
5. Institute for Neuropathology, University Hospital Hamburg-Eppendorf, Hamburg, Germany
6. Department of Neurosurgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
7. Department of Internal Medicine I, Division of Endocrinology, Goethe-University Hospital, Frankfurt, Germany
8. Department of Neurosurgery, University Hospital Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg, Erlangen, Germany
9. Institute of Medical Psychology, Center for Psychosocial Medicine, University Hospital Heidelberg, Ruprecht-Karls University Heidelberg, Heidelberg, Germany
10. Department of Neurosurgery, Helios Klinikum Erfurt, Erfurt, Germany
11. Niels Stensen Bildungszentrum, Osnabrück, Germany
12. Department of Neurosurgery, University Hospital Tübingen, Eberhard-Karls-University Tübingen, Germany
13. Gamma Knife Center Krefeld, Krefeld, Germany
14. Department of Neuropathology, Berlin Institute of Health, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, Berlin, Germany
15. Department of Neurosurgery and Spine Surgery, University Medicine Essen, University of Duisburg-Essen, Essen, Germany
16. Schwerpunktpraxis für Diabetologie und Endokrinologie, Ludwigshafen, Germany
17. Eye Center, Medical Center, Medical Faculty, University of Freiburg, Germany
18. Department of Radiation Oncology, University of Freiburg – Medical Center, Freiburg, Germany
19. Institute of Neuropathology, University Hospital Münster, Münster, Germany
20. Medizinische Klinik und Poliklinik IV, Klinikum der Universität, Ludwig-Maximilians-Universität München, München, Germany
21. Department of Neuroradiology, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
22. Department of Endocrinology and Metabolism, I Medical Clinic, University Hospital, Johannes Gutenberg University of Mainz, Mainz, Germany
23. Centre for Ophthalmology, University Hospital Tübingen, Eberhard-Karls-University Tübingen, Tübingen, Germany