Received: 14 August 2017
Accepted: 8 January 2018
First Online: 22 January 2018
Ethics approval and consent to participate
: The study was approved by the ethics committee of Heidelberg University, Medical Faculty Mannheim (2013-597 N-MA). Written informed consent for study participation was obtained from all patients.
: Not applicable.
: DB reports personal fees from Siemens AG, personal fees from NB Capital Research GmbH, personal fees from NB Capital ApS, outside the submitted work. VS has nothing to disclose: JS has nothing to disclose: GW has nothing to disclose: LT has nothing to disclose: CB has nothing to disclose: FW reports grants and personal fees from Elekta, during the conduct of the study.
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