1. Department of Pediatrics and Communicable Diseases; University of Michigan; Ann Arbor Michigan
2. Center for Statistical Consultation and Research; University of Michigan; Ann Arbor Michigan
3. College of Literature, Science, and the Arts; University of Michigan; Ann Arbor Michigan
4. Wayne State School of Medicine; Detroit Michigan
5. Departments of Pediatrics and Communicable Diseases and Neurology; University of Michigan; Ann Arbor Michigan