- Correspondence to Professor Carlos Arthur Cardoso Almeida, Escola de Enfermagem e Farmácia, Universidade Federal de Alagoas, Campus AC Simões, Av. Lourival Melo Mota, s/n, Tabuleiro do Martins, Maceió, AL 57072-970, Brazil;
- Received September 20, 2012
- Accepted November 6, 2012
- First published January 2, 2013.
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