Funding for this research was provided by:
Received: 29 October 2021
Accepted: 17 February 2022
First Online: 20 March 2022
: The study was approved by the local Human Ethical Committee (Ethik-Kommission an der Medizinischen Fakultät der RWTH Aachen, Pauwelsstraße 30, 52074 Aachen, ExternalRef removed). Informed consent was obtained of all parents prior to inclusion of subjects to the study.
: Not applicable
: The authors declare that they have no competing interests.