Received: 12 August 2019
Accepted: 2 December 2019
First Online: 10 December 2019
: Data have not been published previously.
: This study did not require official or institutional ethical approval. The animals were handled according to high ethical standards and national legislation.
: Not applicable.
: Jens Peter Nielsen has consulted for Pharmacosmos A/S. The authors declare that they have no competing interests.