1. Postgraduate Dental Education Unit; Institute of Clinical Education; Warwick Medical School; University of Warwick; Coventry UK
2. Duquesne University School of Law; Pittsburgh Pennsylvania USA
3. Orthodontic Department; Guy's Hospital; King's College London Dental Institute; London UK
4. Post-Graduate Program in Dentistry; Pontifical Catholic University of Rio Grande do Sul - PUCRS; Porto Alegre Rio Grande do Sul Brazil