1. Medizinische Klinik–Innenstadt, Ludwig Maximilians University, Munich, Germany.
2. Neurologic Clinic Bad Aibling, Aibling, Germany.
3. Department of Neurosurgery, RWTH Hospital Aachen, Aachen, Germany.
4. Second Department of Medicine, Division of Endocrinology, Helios Hospital, Erfurt, Germany.
5. Institute of Clinical Chemistry and Laboratory Medicine, Ernst Moritz Arndt University, Greifswald, Germany.
6. Department of Neurosurgery, Ernst Moritz Arndt University, Greifswald, Germany.
7. Second Department of Internal Medicine, University Hospital Cologne, Cologne, Germany.
8. NRZ Center of Neurorehabilitation, University of Leipzig, Leipzig, Germany.
9. Pfizer Global Pharmaceuticals, Walton Oaks, United Kingdom.
10. Department of Neurosurgery, University Hospital Erlangen, Germany.
11. ClinSupport GmbH, Erlangen, Germany.
12. Neuroendcrinology Group, Max Planck Institute of Psychiatry, Munich, Germany.