1. From the Section of Neurosurgery (R.S., T.M., R.L., R.G., N.H., S.P.P., J.K., D.Z., S.B.L., Y.C., K.C., L.S., I.A.A.), Biological Sciences Division, University of Chicago, IL
2. Molecular Genetics and Microbiology Department, Duke University Medical Center, Durham, NC (A.P., H.P., C.G., D.M.).
3. Department of Pathology (P.P.), Biological Sciences Division, University of Chicago, IL
4. Section of Cardiology (J.K.L.), Biological Sciences Division, University of Chicago, IL