1. Department of Neurological Surgery, University of Virginia Health System, Charlottesville, Virginia, USA;
2. Department of Neurosurgery, The University of Texas Health Science Center, Houston, Texas, USA;
3. Department of Radiation Oncology, University of Virginia Health System, Charlottesville, Virginia, USA;
4. Department of Endocrinology and Metabolism, University of Virginia Health System, Charlottesville, Virginia, USA;
5. Division of Radiation Oncology, University of Alberta, Edmonton, Alberta, Canada;
6. Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA;
7. Department of Stereotactic and Radiation Neurosurgery, Na Homolce Hospital, Prague, Czech Republic;
8. 3rd Department of Medicine, 1st Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic;
9. Department of Radiation Oncology, Mayo Clinic Jacksonville, Jacksonville, Florida, USA;
10. Department of Neurosurgery, NYU Langone Medical Center, New York, New York, USA;
11. Department of Radiation Oncology, NYU Langone Medical Center, New York, New York, USA;
12. Radiology Department, Dominican Gamma Knife Center, CEDIMAT, Santo Domingo, Dominican Republic;
13. Department of Neurosurgery, Koç University School of Medicine, Istanbul, Turkey;
14. Department of Neurosurgery, Penn State Health-Hershey Medical Center, Hershey, Pennsylvania, USA;
15. Division of Radiation Oncology, Allegheny Health Network Cancer Institute, Pittsburgh, Pennsylvania, USA;
16. Department of Neurosurgery, Allegheny Health Network, Pittsburgh, Pennsylvania, , USA;
17. Department of Neurosurgery, Centre de Recherche du CHUS, Université de Sherbrooke, Sherbrooke, Quebec, Canada;
18. Department of Endocrinology, Centre de Recherche du CHUS, Université de Sherbrooke, Sherbrooke, Quebec, Canada