Received: 21 May 2020
Accepted: 12 July 2020
First Online: 6 August 2020
Ethics approval and consent to participate
: In accordance with the Declaration of Helsinki, the Institutional Review Board and the Independent Ethics Committee of the Children’s Clinic Liestal approved all aspects of this study. Approval was provided for research involving the use of material (data records or biopsy specimens) that had been collected for non-research purposes.
: Non applicable.
: The authors declare that they have no competing interests.