Text and Data Mining valid from 2019-12-01
Received: 21 June 2019
Accepted: 22 October 2019
First Online: 2 December 2019
Ethics approval and consent to participate
: Approval for this study was obtained from the local institutional review board and the ethics committee of the University Hospital Tübingen (394/2014MPG23).
: Consent for publication was obtained from legal guardian for the image in Fig. InternalRef removed.
: Vygon® provided Bionecteur® needle-free connectors free of charge for this study. Vygon Inc. had no influence on or participated in patient selection, data acquisition, data analysis or the writing of the manuscript.