Text and Data Mining valid from 2019-07-17
Received: 6 September 2018
Revised: 13 May 2019
Accepted: 9 July 2019
First Online: 17 July 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: All applicable international, national and/or institutional guidelines for the care and use of animals were followed. The fieldwork was carried out under permits from the Lund/Malmö Ethical Committee for Animal Experiments (M160-11, M27-10, M33-13).