1. Rady Children's Hospital of San Diego San Diego California USA
2. University of California San Diego School of Medicine San Diego California USA
3. Northwestern University Feinberg School of Medicine Chicago Illinois USA
4. Ann and Robert H. Lurie Children's Hospital of Chicago Chicago Illinois USA
5. Department of Dermatology Medical Center—University of Freiburg Freiburg Germany
6. University of Texas at Austin Dell Medical School Austin Texas USA
7. Dell Children's Medical Center Austin Texas USA