1. Department of Pediatrics, Indiana University School of Medicine, Indianapolis, Indiana 46202
2. Herman B.Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana 46202
3. Howard Hughes Medical Institute, Indiana University School of Medicine, Indianapolis, Indiana 46202
4. Department of Dermatology, Indiana University School of Medicine, Indianapolis, Indiana 46202
5. Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Indiana 46202
6. Department of Pediatrics, University of California at San Francisco School of Medicine, San Francisco, California 94143