Zeman, Marcin http://orcid.org/0000-0002-8607-7994
Czarnecki, Marek
Chmielik, Ewa
Idasiak, Adam
Skałba, Władysław
Strączyński, Mirosław
Paul, Piotr J.
Czarniecka, Agnieszka
Article History
Received: 27 January 2021
Accepted: 11 May 2021
First Online: 21 May 2021
Declarations
:
: This retrospective study involving human participants was in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki Declaration and its later amendments. The study was approved by the institutional ethics committee of National Research Institute of Oncology (KB/430-53/19). Due to the retrospective design of the study, the ethics committee confirmed that informed consent was not necessary from participants.
: Not applicable
: The authors declare that they have no competing interests.