Borges, Vítor
Nunes, Alexandra
Sampaio, Daniel A.
Vieira, Luís
Machado, Jorge
Simões, Maria J.
Gonçalves, Paulo
Gomes, João P.
Article History
Received: 25 February 2016
Accepted: 29 April 2016
First Online: 19 May 2016
Competing interests
: The authors declare no competing financial interests.