1. From the Section of Allergy and Immunology, Penn State Milton S. Hershey Medical Center, Hershey, Pennsylvania
2. Penn State College of Medicine, Hershey, Pennsylvania
3. Department of Dermatology, Penn State Milton S. Hershey Medical Center, Hershey, Pennsylvania
4. Department of Dermatology and Pathology, Penn State Milton S. Hershey Medical Center, Hershey, Pennsylvania