Mão-de-Ferro, S
Serrano, M
Ferreira, S
Rosa, I
Lage, P
Alexandre, D P
Freire, J
Mirones, L
Casaca, R
Bettencourt, A
Pereira, A D
Article History
Received: 5 October 2015
Revised: 9 October 2015
Accepted: 27 October 2015
First Online: 16 December 2015
Competing interests
: The authors declare no conflict of interest.