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Authors
Maia, Francisco C. B.
Samad, Ricardo E.
Bettini, Jefferson
Freitas, Raul O.
Vieira Junior, Nilson D.
Souza-Neto, Narcizo M.
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Article History
Received: 6 January 2015
Accepted: 8 June 2015
First Online: 7 July 2015
Competing interests
: The authors declare no competing financial interests.
