Ricardo, Fernando
GĂ©nio, Luciana
Costa Leal, Miguel
Albuquerque, Rui
Queiroga, Henrique
Rosa, Rui
Calado, Ricardo
Article History
Received: 22 December 2014
Accepted: 27 May 2015
First Online: 7 July 2015
Competing interests
: The authors declare no competing financial interests.