Text and Data Mining valid from 2019-06-22
Received: 29 October 2018
Accepted: 6 June 2019
First Online: 22 June 2019
Ethics approval and consent to participate
: Tuebingen University Hospital (reference number Pr. Nr. 692/2018BO2), including a parental consent waiver for retrospective studies.
: The authors declare that they have no competing interests.