1. Department of Neurosurgery, Penn State Milton S. Hershey Medical Center, Hershey, Pennsylvania;
2. Departments of Neurological Surgery and
3. Department of Epidemiology, University of Iowa, Iowa City, Iowa;
4. Department of Pediatric Neurosurgery, University of Utah School of Medicine, Salt Lake City, Utah;
5. Department of Neurological Surgery, Vanderbilt University Medical Center, Nashville, Tennessee;
6. Department of Neurological Surgery, The Ohio State University College of Medicine, Columbus, Ohio;
7. Division of Pediatric Neurosurgery, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio;
8. Division of Neurosurgery, University of Alabama School of Medicine, Birmingham, Alabama;
9. Department of Pediatric Surgery and Neurosurgery, The University of Texas McGovern Medical School, Houston, Texas;
10. Department of Neurological Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin;
11. Department of Neurosurgery, Neuroscience Institute, All Children’s Hospital, St. Petersburg, Florida;
12. Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, Wisconsin;
13. Department of Neurosurgery, Mayo Clinic, Rochester, Minnesota;
14. Department of Neurosurgery, Johns Hopkins School of Medicine, Baltimore, Maryland;
15. Department of Neurosurgery, Stanford Child Health Research Institute, Stanford, California;
16. Department of Neurosurgery, Wake Forest Baptist Medical Center, Winston-Salem, North Carolina;
17. Department of Neurosurgery, Barrow Neurological Institute, Phoenix, Arizona;
18. Department of Pediatric Neurosurgery, Ann & Robert H. Lurie Children’s Hospital of Chicago, Illinois;
19. Department of Pediatric Neurosurgery, University of Florida College of Medicine, Jacksonville, Florida;
20. Department of Neurological Surgery, Columbia University College of Physicians and Surgeons, New York, New York;
21. Department of Neurological Surgery, Oregon Health & Science University, Portland, Oregon;
22. Department of Neurosurgery, Children’s Healthcare of Atlanta, Georgia;
23. Department of Neurosurgery, Baylor College of Medicine, Houston, Texas;
24. Department of Neurosurgery, University of Washington Medicine, Seattle, Washington;
25. Department of Neurosurgery, Duke University School of Medicine, Durham, North Carolina;
26. Department of Neurosurgery, University of Minnesota Medical School, Minneapolis, Minnesota;
27. Department of Neurosurgery, Children’s Hospital Colorado, Aurora, Colorado;
28. Department of Neurosurgery, Children’s National Medical Center, Washington, DC;
29. Department of Neurosurgery, University of Tennessee Health Science Center, Memphis, Tennessee;
30. Division of Neurosurgery, Children’s Hospital Los Angeles, California;
31. Department of Neurosurgery, University of Iowa Hospitals, Iowa City, Iowa;
32. Department of Pediatric Neurosurgery, Miami Children’s Hospital and University of Miami Miller School of Medicine, Miami, Florida;
33. Department of Neurological Surgery, Indiana University School of Medicine, Indianapolis, Indiana;
34. Department of Neurosurgery, University of Michigan, Ann Arbor, Michigan;
35. Department of Neurological Surgery, St. Christopher’s Hospital, Philadelphia, Pennsylvania;
36. Department of Neurosurgery, University of Arkansas College of Medicine, Little Rock, Arkansas;
37. Department of Neurosurgery, Harvard Medical School, Boston, Massachusetts;
38. Department of Neurosurgery, University of Oklahoma, Oklahoma City, Oklahoma;
39. Division of Neurosurgery, University of Vermont Medical Center, Burlington, Vermont; and
40. Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
41. Radiology, Washington University School of Medicine, St. Louis, Missouri;