Received: 23 November 2020
Accepted: 8 May 2021
First Online: 31 May 2021
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. Stool samples used in this study were collected in clinical studies approved by the Regional Ethics Committee of Northern Jutland, Denmark (N-20130070).