DOI:
10.1055/s-00030576
Revista Brasileira de Ginecologia e Obstetrícia / RBGO Gynecology and Obstetrics
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References
Banco Central do Brasil.
Taxas de Câmbio.
http://www.bcb.gov.br/pt-br/#!/home 2016 . Accessed August 18, 2016.
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