Funding for this research was provided by:
Received: 14 November 2019
Accepted: 7 April 2020
First Online: 25 April 2020
Ethics approval and consent to participate
: All experiments were carried out in compliance with the National Guidelines for Animal Protection, Germany, with the approval of the regional Animal Care Committee of the Government of Upper Bavaria (Regierung v. Oberbayern) and were overseen by a veterinarian.
: Not applicable.
: The authors declare that they have no competing interests.