Oliveira, Jorge
Negrão, Luís
Fineza, Isabel
Taipa, Ricardo
Melo-Pires, Manuel
Fortuna, Ana Maria
Gonçalves, Ana Rita
Froufe, Hugo
Egas, Conceição
Santos, Rosário
Sousa, Mário
Article History
Received: 21 October 2014
Revised: 14 January 2015
Accepted: 2 February 2015
First Online: 5 March 2015
Competing interests
: The authors declare no conflict of interest.