Pereira, Vania
Tomas, Carmen
Sanchez, Juan J
Syndercombe-Court, Denise
Amorim, António http://orcid.org/0000-0002-7518-6247
Gusmão, Leonor
Prata, Maria João
Morling, Niels
Article History
Received: 16 August 2013
Revised: 8 April 2014
Accepted: 9 April 2014
First Online: 7 May 2014
Competing interests
: The authors declare no conflict of interest.