Alves-Pereira, Clara F.
de Freitas, Raquel
Lopes, Telma
Gardner, Rui
Marta, Filipa
Vieira, Paulo
Barreto, Vasco M.
Article History
Received: 14 July 2014
Accepted: 20 October 2014
First Online: 17 December 2014
Competing interests
: The authors declare no competing financial interests.