Funding for this research was provided by:
Deutsche Forschungsgemeinschaft (BA 2168/14-1, BA 2168/16-1, GRK 2344/1)
Nationales Centrum für Tumorerkrankungen Heidelberg (NCT3.0_2015.54 DysregPT)
Received: 2 February 2019
Accepted: 16 May 2019
First Online: 12 June 2019
: S.D. is co-owner of the siTOOLs Biotech GmbH, Martinsried, Germany, without any relation to this study or competing financial interests. The remaining authors declare no competing interests.