Funding for this research was provided by:
Bundesamt für Lebensmittelsicherheit und Veterinärwesen (MON-108)
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (31003A_163438)
Received: 30 March 2019
Accepted: 18 June 2019
First Online: 24 June 2019
Ethics approval and consent to participate
: All animals in this study were submitted to diagnostic neuropathological investigation after dying of sickness or being euthanized because of it, and approval for this study was therefore not required as per the local legislation.
: Not applicable.
: The authors declare that they have no competing interests.