Skalski, Marcin
Ustaszewski, Adam
Jaskiewicz, Katarzyna
Kiwerska, Katarzyna
Wierzbicka, Malgorzata
Klimza, Hanna
Grenman, Reidar
Giefing, Maciej
Funding for this research was provided by:
Narodowe Centrum Nauki (2016/23/B/NZ2/03041)
Kinderkrebsinitiative Buchholz/Holm-Seppensen
Article History
Received: 14 March 2018
Revised: 12 April 2018
Accepted: 18 April 2018
First Online: 29 April 2018
Compliance with ethical standards
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: The authors declare that they have no conflict of interests.
: Approval of the ethics institutional review board at the University of Medical Sciences in Poznan, Poland (No. 449/17). Informed consent was obtained from all subjects.