Funding for this research was provided by:
European Commission (305340)
Spanish Ministry of Economy and Competitiveness and FEDER funds (TIN2014-60346-R)
Article History
Received: 2 March 2018
Accepted: 5 May 2018
First Online: 21 May 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: We declare that all authors comply with Springer’s ethical policies.
: No human participants or animals were involved in the study.