1. Division of Oral and Maxillofacial Pathology School of Dentistry University of Minnesota Minneapolis Minnesota USA
2. In Private Practice Wayzata Minnesota USA
3. Department of Biochemistry, Molecular Biology and Biophysics University of Minnesota Minneapolis Minnesota USA
4. Howard Hughes Medical Institute University of Minnesota Minneapolis Minnesota USA
5. Masonic Cancer Center University of Minnesota Minneapolis Minnesota USA
6. Department of Dermatology Mayo Clinic Rochester Minnesota USA
7. Department of Dermatology Medical School University of Minnesota Minneapolis Minnesota USA