Document is current

Article History

Received: 16 October 2017

Accepted: 30 July 2018

First Online: 6 August 2018

Ethics approval and consent to participate

: Parents gave verbal informed consent to telephone interviews, data collection and publication of study results. The study was approved by the local Ethics Committee (Charité, Berlin, Germany, EA2/190/17). Verbal consent was approved since no interventions appart from routine clinical care were performed and data were collected retrospectively from clinical charts.

: n/a.

: The authors declare no competing interests.

: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.