Funding for this research was provided by:
The Danish Pig Levy Foundation (No award number available)
Received: 14 December 2018
Accepted: 13 May 2019
First Online: 27 June 2019
Ethics approval and consent to participate
: The Danish Veterinary and Food Administration granted administrative permission to access CHR and VetStat data. Furthermore, the farmers gave consent to participate in the third part of the study.
: Not applicable.
: The authors declare that they have no competing interests.
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