Funding for this research was provided by:
Ministry of Education and Science | Fundação para a Ciência e a Tecnologia (Portuguese Science and Technology Founation) (Investigador FCT IF/00019/2013, EXPL/BIA-EVF/0129/2013)
Article History
Received: 2 February 2018
Revised: 15 August 2018
Accepted: 16 August 2018
First Online: 6 September 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.