Funding for this research was provided by:
Foundation for St. Sophia Specialist Hospital in Warsaw (Grant (number 3B/GF/2018))
Received: 14 July 2020
Accepted: 12 October 2021
First Online: 11 November 2021
: The Bio-ethical Commission approved the study of the Medical University of Warsaw (reference number AKB/226/2018). According to Polish law, non-interventional observational studies do not require patient consent, which was confirmed by the Bio-ethics Committee assessing this study. The consent of the Hospital Director was obtained for access to medical data.
: Not applicable.
: The authors have no conflicts of interest to disclose.