1. Department of Internal Medicine, Division of Hematology/Oncology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
2. Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
3. Department of Dermatology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
4. Departments of Pathology and Dermatology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA