Funding for this research was provided by:
uniwersytet medyczny w lodzi (2014/15/B/NZ5/01579, 2015/19/B/NZ5/02243)
polskie towarzystwo diabetologiczne (no number)
Received: 6 July 2021
Accepted: 1 October 2021
First Online: 20 November 2021
: The study protocol was approved by the University Bioethics Committee at the Medical University in Lodz, Poland (RNN/73/14/KE).
: Patients have written informed consent for participation in the study and publication. All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Declaration of Helsinki.
: The authors declare that they have no competing interests in relation to this work.