Funding for this research was provided by:
Text and Data Mining valid from 2018-11-08
Received: 18 April 2018
Accepted: 25 October 2018
First Online: 8 November 2018
Compliance with ethical standards
: TN. Stueber: received fees from Roche Pharma; CR Weiss: none; A. Woeckel: received fees from Roche, Pfizer, Novartis, Amgen, Celgene, Eisai; S. Haeusler: received fees from Novartis and Roche Pharma.
: As the study consisted of the retrospective analysis of anonymized data according to the local ethics committee a special approval is generally not required.