Funding for this research was provided by:
Fundação para a Ciência e a Tecnologia (PD/BD/127802/2016)
Article History
Received: 13 March 2019
Revised: 6 August 2019
Accepted: 3 September 2019
First Online: 6 November 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.