Funding for this research was provided by:
Bundesanstalt für Landwirtschaft und Ernährung (28RZ372061)
Received: 10 January 2019
Accepted: 27 May 2019
First Online: 14 June 2019
Ethics approval and consent to participate
: The animal experiments were conducted in accordance with the corresponding German regulations and approved by the Ethics Committee of Lower Saxony for Care and Use of Laboratory Animals (LAVES) (Niedersächsisches Landesamt für Verbraucherschutz und Lebensmittelsicherheit; reference: 33.19–42502-05-16A020).
: Not applicable.
: The authors declare that they have no competing interests.