1. Pontifical Catholic University of São Paulo, Sorocaba, Brazil
2. Southern Illinois University, Carbondale, Illinois, USA
3. Family and Community Medicine, Southern Illinois University School of Medicine, Carbondale, Illinois, USA
4. School of Medicine, Federal University of Juiz de Fora, Minas Gerais, Brazil
5. Department of Medical Education, Southern Illinois University School of Medicine, Springfield, Illinois, USA