1. Department of Dermatology; Northwestern University; Chicago; Illinois
2. University of California at San Francisco; San Francisco; California
3. Baylor Research Institute; Dallas; Texas
4. University of California at San Diego; San Francisco; California
5. University Hospitals Case Medical Center; Cleveland; Ohio
6. University of Massachusetts; Worcester; Massachusetts
7. University of California Davis Health System; Sacramento; California
8. Dell Children's Medical Center; Austin; Texas