- Correspondence to Professor Charliana Casal, Laboratory of Immunogenetics, Instituto de Ciências Biológicas, Lab. de Imunogenética. Avenida Augusto Correa, n 01. Bairro Guamá. Cep.: 66075-110 / Belém, Pará, Brazil;
- Accepted September 3, 2012
- First published October 4, 2012.
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