1. From the Department of Dermatology, George Washington University School of Medicine and Health Sciences, Washington, District of Columbia, USA.
2. Department of Allergy and Immunology, Robert and Anne Lurie Children's Hospital, Chicago, Illinois, USA.
3. Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA.
4. Department of Pediatrics, National Jewish Hospital, Denver, Colorado, USA.
5. Department of Sleep Medicine, Robert and Anne Lurie Children's Hospital, Chicago, Illinois, USA.
6. Sleep Medicine Center, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA.
7. Department of Dermatology, University of Miami Miller School of Medicine, Miami, Florida, USA.
8. Department of Dermatology, George Washington University School of Medicine and Health Sciences, Washington, District of Columbia, USA.