1. Department of Neurosurgery, Johns Hopkins University School of Medicine , Baltimore, MD , USA
2. Medical Scientist Training Program, Yale University School of Medicine , New Haven, CT , USA
3. Department of Neurosurgery, Yale University School of Medicine , New Haven, CT , USA
4. University of Maryland School of Medicine , Baltimore, MD , USA
5. Case Western Reserve University School of Medicine , Cleveland, OH , USA
6. Krieger School of Arts & Sciences, Johns Hopkins University , Baltimore, MD , USA
7. Harvard-MIT Program in Health Sciences and Technology, Harvard Medical School , Boston, MA , USA