Guzik, Grzegorz
Article History
Received: 11 June 2017
Accepted: 14 February 2018
First Online: 20 February 2018
Author’s information
: Grzegorz Guzik PhD is the Chief of Oncological Orthopedics Department at the Podkarpackie Oncologcal Center in Brzozów, Poland.
: The research has been performed in accordance with the Declaration of Helsinki. As this retrospective analysis consists of anonymised clinical routine data, the Research Ethics Committee (District Medical Chamber in Cracov Ethics Committee) deemed the application for and issue of an ethics approval was not necessary. All the data were anonymised before the author started the research and had access to the data. All the patients gave a written consent to the use of data for research.
: Not applicable.
: The author declares that he has no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.