1. Periodontics Specialty Universidad Autónoma de San Luis Potosí San Luis Potosí Mexico
2. Department of Oral Surgery, Pathology and Clinical Dentistry, School of Dentistry Universidade Federal de Minas Gerais Belo Horizonte Brazil
3. Oral Radiology Clinic Universidad Autónoma de San Luis Potosí San Luis Potosí Mexico
4. Department of Oral Diagnosis and Pathology, School of Dentistry Universidade Federal do Rio de Janeiro Rio de Janeiro Brazil
5. Department of Dentistry Universidade de Fortaleza Fortaleza Brazil