1. Molecular Virology Laboratory, North Regional; University of Republic; Salto Uruguay
2. Laboratory of Comparative and Environmental Virology; Oswaldo Cruz Institute; Rio de Janeiro Brazil
3. Pediatric Unit; Medical-Surgical Society; Salto Uruguay
4. Pediatric Unit of Regional Public Hospital; Salto Uruguay
5. Molecular Virology Laboratory, Faculty of Sciences; University of Republic; Montevideo Uruguay