Kaszyński, Maciej
Lewandowska, Dorota
Sawicki, Piotr
Wojcieszak, Piotr
Pągowska-Klimek, Izabela
Article History
Received: 13 October 2020
Accepted: 2 December 2020
First Online: 5 January 2021
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of the Medical University of Warsaw (KB/24/2019).The trial was registered at the US National Institutes of Health (ExternalRef removed): NCT03886896. The date of registration: 15/03/2019.Parents provided written informed consent.
: The authors declare no conflicts of interest.