Fraga, Joana
Maranha, Ana
Mendes, Vitor
Pereira, Pedro José Barbosa
Empadinhas, Nuno
Macedo-Ribeiro, Sandra
Article History
Received: 2 September 2014
Accepted: 2 January 2015
First Online: 26 January 2015
Competing interests
: The authors declare no competing financial interests.