1. Division of Dermatology, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA;
2. Northwestern University Feinberg School of Medicine, Chicago, IL, USA;
3. David Geffen School of Medicine at UCLA, UCLA-Caltech Medical Scientist Training Program, Los Angeles, CA, USA;
4. Department of Bioengineering, UCLA, Los Angeles, CA, USA