Funding for this research was provided by:
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (SNF310030_155949)
Fondation Ernst et Lucie Schmidheiny (n/a)
Foundation Novartis Consumer Health (n/a)
National Institute of Allergy and Infectious Diseases (AI095320, AI12335)
Received: 8 September 2017
Accepted: 14 December 2017
First Online: 10 January 2018
: All animal procedures were in accordance with federal regulations of the Bundesamt für Lebensmittelsicherheit und Veterenärwesen (BLV) Switzerland (Tierschutzgesetz) and approved by cantonal authorities (license number GE/44/17 and GE/45/15).
: Not applicable
: The authors declare that they have no competing interests.
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