Tavares, Ana P. M.
Ferreira, NĂ¡dia S.
Truta, Liliana A. A. N. A.
Sales, M. Goreti F.
Article History
Received: 18 February 2016
Accepted: 27 April 2016
First Online: 23 May 2016
Competing interests
: The authors declare no competing financial interests.