Ďurčo, Filip
Köstlin-Gille, Natascha
Poets, Christian F.
Gille, Christian
Article History
Received: 27 June 2020
Revised: 29 September 2020
Accepted: 23 October 2020
First Online: 9 February 2021
Competing interests
: The authors declare no competing interests.
: All parents gave written informed consent. The study protocol was approved by ethics committee of the Medical Faculty of Tuebingen University, application number 248/2005A.