Funding for this research was provided by:
The State Research Funding for Helsinki University Hospital (Y1018XTS15, Y1018XTS16)
The Finnish Cancer Society (170114)
Text and Data Mining valid from 2020-03-24
Received: 28 October 2019
Accepted: 17 March 2020
First Online: 24 March 2020
Ethics approval and consent to participate
: Not applicable; the present study is based on hospital registry data, and, since the data has already been collected for clinical purposes, no patient interventions were performed; therefore, the legislation does not mandate any ethics committee approval. However, the institutional board of HUCH evaluated the study protocol and gave the permission to conduct it according to the rules of the Helsinki declaration.
: Not applicable.
: The authors report no conflicts of interest.