Moura, João
Rodrigues, João
Gonçalves, Marta
Amaral, Cláudia
Lima, Margarida
Carvalho, Eugénia
Article History
Received: 24 August 2015
Revised: 28 December 2015
Accepted: 28 December 2015
First Online: 21 March 2016
Competing interests
: The authors declare no conflict of interest.