Rey, Felisa
Alves, Eliana
Melo, Tânia
Domingues, Pedro
Queiroga, Henrique
Rosa, Rui
Domingues, M. Rosário M.
Calado, Ricardo
Article History
Received: 12 March 2015
Accepted: 21 July 2015
First Online: 30 September 2015
Competing interests
: The authors declare no competing financial interests.