Funding for this research was provided by:
Private Universität Witten/Herdecke gGmbH
Received: 15 December 2020
Accepted: 7 April 2021
First Online: 24 April 2021
: For the collection and use of specimens at Helios University Hospital Wuppertal (North Rhine-Westphalia, West Germany) and Klinikum Kassel (Hessen, Central Germany) we obtained approval from the Witten/Herdecke University Ethics board (covered by “CoronaKids” [No. 61/2020] and No. 160/2020 for the use of routinely sampled and confirmed specimens for RT-qPCR/pyrosequencing method establishment). All work has been conducted according to the principles expressed in the Declaration of Helsinki.
: Informed written consent was obtained from the legal guardians of the involved children.
: The authors declare that they have no competing interests.