1. Postgraduate Course on Cellular and Molecular Biology; Federal University of Rio Grande do Sul; Porto Alegre Brazil
2. Centre for Scientific and Technological Development; State Foundation on Medical Production and Research; Porto Alegre Brazil
3. Postgraduate Course Course on Genetics and Molecular Biology; Federal University of Rio Grande do Sul; Porto Alegre Brazil
4. Section of Viral Hepatitis; Municipal Department of Health; Chapecó Brazil
5. Postgraduate Course on Cellular and Molecular Biology Applied to Health; Brazilian Lutheran University; Canoas Brazil
6. Molecular Virology Laboratory; Oswaldo Cruz Institute; Rio de Janeiro Brazil