Rodrigues, A F
Formas-Oliveira, A S
Guerreiro, M R
Tomás, H A
Alves, P M
Coroadinha, A S
Article History
Received: 26 September 2014
Revised: 16 April 2015
Accepted: 22 April 2015
First Online: 4 May 2015
Competing interests
: The authors declare no conflict of interest.