Funding for this research was provided by:
Akademiska Sjukhuset (Akademiska Sjukhuset)
Received: 1 December 2020
Accepted: 2 August 2021
First Online: 9 August 2021
: The study was approved by institutional review committees at the Northern State Medical University (Arkhangelsk, Russia) and Yale University School of Medicine (New Haven, Connecticut, United States). Written informed consent was obtained from all participants, with both parents (for the child) and the students themselves having the right to refuse to participate in the study.
: Informed consent was obtained from all individual participants included in the study and from the institutional review committees.
: The authors declare that they have no competing interests.