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Authors
Flacco, A.
Vieira, J.
Lifschitz, A.
Sylla, F.
Kahaly, S.
Veltcheva, M.
Silva, L. O.
Malka, V.
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Article History
Received: 1 July 2014
Accepted: 16 March 2015
First Online: 20 April 2015
Competing interests
: The authors declare no competing financial interests.
