1. Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
2. Division of Dermatology, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
3. Department of Dermatology & Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
4. Medical Dermatology Associates of Chicago, Chicago, IL, USA