Oliveira, Jorge
Gonçalves, Ana
Taipa, Ricardo
Melo-Pires, Manuel
Oliveira, Márcia E
Costa, José Luís
Machado, José Carlos
Medeiros, Elmira
Coelho, Teresa
Santos, Manuela
Santos, Rosário
Sousa, Mário
Article History
Received: 9 September 2015
Revised: 28 November 2015
Accepted: 5 January 2016
First Online: 4 February 2016
Competing interests
: The authors declare no conflict of interest.
Free to read: This content has been made available to all.