1. Department of Prosthodontics; Faculty of Odontology; Malmö University; Malmö Sweden
2. Department of Oral and Maxillofacial Surgery; Queen Alexandra Hospital; Portsmouth UK
3. Department of Histopathology; Queen Alexandra Hospital; Portsmouth UK
4. School of Pharmacy and Biomedical Sciences; University of Portsmouth; Portsmouth UK
5. Department of Oral Surgery and Pathology; School of Dentistry; Universidade Federal de Minas Gerais; Belo Horizonte Brazil