1. University of Texas Southwestern Medical Center, Department of Dermatology, Dallas, Texas.
2. Children's Medical Center Research Institute, University of Texas Southwestern Medical Center, Dallas, Texas.
3. Molecular Oncology Laboratory, Division of Cancer Research, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.
4. ProPath Dermatopathology, Dallas, Texas.
5. University of Michigan, Department of Dermatology, Ann Arbor, Michigan.