Funding for this research was provided by:
Seventh Framework Programme (282996 (ENV.2011.1.2.3-2))
Mokslo, Inovaciju ir Technologiju Agentura (31V-70)
Text and Data Mining valid from 2019-02-12
Received: 23 July 2018
Accepted: 30 January 2019
First Online: 12 February 2019
Compliance with ethical standards
: The authors declare that they have no competing interests.
: Ethics approval was obtained for all aspects of the study by the Lithuanian Bioethics Committee, and informed consent was obtained from all participants.