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Authors
Soares-Cunha, C
Coimbra, B
Borges, S
Carvalho, M M
Rodrigues, A J
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Article History
Received: 6 February 2014
Revised: 11 April 2014
Accepted: 22 April 2014
First Online: 10 June 2014
Competing interests
: The authors declare no conflict of interest.
