1. Department of Biostatistics, Columbia University Mailman School of Public Health, Columbia University Irving Medical Center, New York, NY, USA
2. Department of Neurology, Columbia University Irving Medical Center, New York, NY, USA
3. Meningitis Laboratory, Wadsworth Center, New York State Department of Health, Albany, NY, USA
4. Department of Pathology & Cell Biology, Columbia University Irving Medical Center, New York, NY, USA
5. Department of Medicine, Division of Infectious Diseases, Columbia University Irving Medical Center, New York, NY, USA
6. Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, NY, USA