Funding for this research was provided by:
Ministerio de Economia y Competitividad (Project CTQ2015-70700-P)
Portuguese Foundation for Science and Technology (UID/CTM/50025/2013)
European Commission (n.a.)
Article History
Received: 11 May 2018
Revised: 4 July 2018
Accepted: 4 July 2018
First Online: 20 July 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.