Funding for this research was provided by:
Klaus Tschira Stiftung (00.237.2013)
Received: 23 March 2018
Accepted: 23 August 2018
First Online: 31 August 2018
Ethics approval and consent to participate
: The study was approved by the Heidelberg University Independent Ethics Committee (Nr. S-431/2013). Additionally, approval was given from the German Federal Office of Radiation Protection (BfS).All patients were duly provided with full information and explanation about the study. Subsequently all of the participants signed the statement of informed consent.
: Not applicable
: The authors declare that they have no competing interests.
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