Funding for this research was provided by:
Uniwersytet Jagielloński Collegium Medicum (K/ZDS/006104, K/ZDS/006105)
Text and Data Mining valid from 2019-07-17
Received: 14 May 2019
Accepted: 7 July 2019
First Online: 17 July 2019
Ethics approval and consent to participate
: The ethics committee of our University approved the protocol, including the fact that informed consent was not sought owing to a retrospective study design (Approval No. 122.6120.228.2016 of June 27th, 2016; renewal issued on January 31st, 2019).
: Not applicable.
: The authors declare that they have no competing interests.