Funding for this research was provided by:
Bundesamt für Lebensmittelsicherheit und Veterinärwesen (ARAMIS 1.16.09)
Received: 4 June 2019
Accepted: 9 July 2019
First Online: 15 August 2019
: This study was conducted according to the Swiss law for Animal Welfare and approved by the Bernese cantonal veterinary office under the animal experiment announcement BE61/16.
: Not applicable.
: The authors declare that they have no competing interests.