Received: 2 January 2021
Accepted: 26 February 2021
First Online: 28 May 2021
: This experiment was approved by the cantonal Animal Care and Use Committee of the Veterinary Office of Zurich (Veterinäramt Zürich, Zollstrasse 20, CH-8090 Zürich, Switzerland; experiment Nr. 87/2006). All methods were carried out in accordance with the relevant guidelines and regulations and the study was carried out in compliance with the ARRIVE guidelines.
: Not applicable.
: The authors declare that they have no competing interests.