Fernandes, Pedro
do Brito, Joaquim Soares
Costa, AdÃlia
Monteiro, Jacinto
Article History
Received: 16 October 2017
Revised: 22 January 2018
Accepted: 24 January 2018
First Online: 29 January 2018
Compliance with ethical standards
:
: None of the authors has any potential conflict of interest.