Funding for this research was provided by:
Text and Data Mining valid from 2019-07-25
Received: 20 December 2018
Accepted: 10 July 2019
First Online: 25 July 2019
Compliance with ethical standards
: The authors declare that they have no conflicts of interests.
: The research presented in this paper complies with the guidelines from the directives 2010/63/EU of the European parliament and of the Council of 22nd September 2010 on the protection of animals used for scientific purposes.