Received: 17 December 2020
Accepted: 22 January 2021
First Online: 2 February 2021
Ethics approval and consent to participate
: Data collection was allowed by written informed consent of patient/parent. Patient’s data were de-identified. Given the anonymous collection of data, ethical approval was not necessary.
: Written informed consent was obtained from at least one parent/patient.
: The authors declare that they have no competing interests.