1. Laboratory of Epithelial Biology Department of Periodontics and Oral Medicine Division of Oral Pathology Oral Radiology and Oral Medicine University of Michigan School of Dentistry Ann Arbor MI USA
2. Laboratory of Oral Histopathology Health Sciences Faculty University of Brasilia Brasilia Brazil
3. School of Pharmacy Dentistry and Nursing Federal University of Ceara Fortaleza Brazil
4. The University of Michigan Rogel Cancer Center Ann Arbor MI USA