de Vasconcelos, Nivaldo A. P.
Soares-Cunha, Carina
Rodrigues, Ana João
Ribeiro, Sidarta
Sousa, Nuno
Article History
Received: 7 October 2016
Accepted: 10 March 2017
First Online: 10 April 2017
Competing interests
: The authors declare no competing financial interests.