Šebunova, Natalja
Štšepetova, Jelena
Kullisaar, Tiiu
Suija, Kadri
Rätsep, Anneli
Junkin, Igor
Soeorg, Hiie
Lember, Margus
Sillakivi, Toomas
Mändar, Reet
Article History
Received: 31 August 2021
Accepted: 19 January 2022
First Online: 3 February 2022
Declarations
:
: The present study was conducted according to the guidelines laid down in the Declaration of Helsinki. The study was approved by the Ethics Review Committee on Human Research of Tartu University, Estonia (protocol no 244/T-13). Participation in the study was voluntary. Written informed consent was obtained from all study subjects.
: Not applicable.
: All authors declarate no conflict of interest.