Received: 9 June 2020
Accepted: 11 June 2020
First Online: 18 December 2020
Ethics approval and consent to participate
: The protocol of this study was approved by the local animal welfare committee as an amendment (DD24.1-5131/394/76) to experimental study (DD24.1-55131/394/8; TVV 5/201; NTP-ID: 00014251-1-0).
: Not applicable
: The authors declare that they have no competing interests.