Received: 25 April 2020
Accepted: 7 December 2020
First Online: 20 March 2021
Change Date: 10 May 2021
Change Type: Correction
Change Details: A Correction to this paper has been published:
Change Details: https://doi.org/10.1186/S13023-021-01854-W
Ethics approval and consent to participate
: This study did not require an ethical approval nor a consent for publication.
: Not applicable.
: The authors declare no support from any organisation for the submitted work, no financial relationships with any organisations that might have an interest in the submitted work in the previous 3 years, no other relationships or activities that could appear to have influenced the submitted work.