Quina, A S
Bastos-Silveira, C
Miñarro, M
Ventura, J
Jiménez, R
Paulo, O S
da Luz Mathias, M
Article History
Received: 21 November 2014
Revised: 10 March 2015
Accepted: 24 March 2015
First Online: 20 May 2015
Competing interests
: The authors declare no conflict of interest.