Funding for this research was provided by:
Suomen Kulttuurirahasto (00171108, 00161055)
Text and Data Mining valid from 2019-07-13
Received: 20 December 2018
Accepted: 2 July 2019
First Online: 13 July 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: Samples were collected from ongoing national monitoring programmes of fish and seals in the Baltic Sea, according to relevant national and international guidelines, and did not require any separate permits from animal research ethics committees. Thus, all applicable international, national, and/or institutional guidelines for the care and use of animals were followed.