1 Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.
2 Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois; Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.
3 Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois. Electronic address: b-nardone@northwestern.edu.