1. Assistant professor, Dental Diagnostic Sciences Department, Indiana University School of Dentistry, 1121 W. Michigan St., Room S110 Indianapolis, IN 46202-5186, US.
2. Associate professor, Pathology Department, Indiana University School of Medicine, Indianapolis, IN, US.
3. Professor emeritus, Oral Diagnosis/Oral Medicine Department, Indiana University School of Dentistry, Indianapolis, IN, US.