1. Johns Hopkins University,Neurosurgery,Baltimore,MD,USA
2. Johns Hopkins University,Biomedical Engineering,Baltimore,MD,USA
3. Johns Hopkins University,Mechanical Engineering,Baltimore,MD,USA
4. University of Wisconsin,Health Equity and Health Promotion,Madison,WI,USA
5. Sonic Concepts, Inc.,Bothell,WA,USA
6. Johns Hopkins University,Neuroplastic and Reconstructive Surgery,Baltimore,MD,USA