Barroca, Mário
Rodrigues, Paulo
Sobral, Rómulo
Costa, M. Manuela R.
Chaves, Susana R.
Machado, Raul
Casal, Margarida
Collins, Tony
Article History
Received: 26 July 2016
Accepted: 14 October 2016
First Online: 16 December 2016
Competing interests
: The authors declare no competing financial interests.