Funding for this research was provided by:
Uniwersytet Medyczny im. Karola Marcinkowskiego w Poznaniu (502-01-01124182-07474, 502-01-02225363-03679)
Received: 4 December 2019
Accepted: 7 January 2021
First Online: 22 January 2021
Ethics approval and consent to participate
: The study design was approved by the Institutional Review Board of Poznan University of Medical Sciences, Poland. Written informed consent was obtained from all HD patients included in the study or their parents, as appropriate. All methods were performed under the Helsinki Declaration’s ethical standards (1964, amended most recently in 2008), which was created by the World Medical Association.
: Not applicable.
: The authors declare that they have no competing interests.