1. Laboratory of Central Nervous System Studies, NINCDS, National Institutes of Health, Bethesda, Maryland 20205,
2. Department of Tropical Medicine and Medical Microbiology, University of Hawaii School of Medicine, Honolulu, Hawaii 96816,
3. Public Health Department, Jayapura, Irian Jaya, Indonesia,
4. Department of Pediatrics, Johns Hopkins School of Medicine, Baltimore, Maryland 21205, and
5. Department of Neuropathology, Instituto Nacional de Neurologica y Neurocirugia, Mexico City, Mexico