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Funding for this research was provided by:
Estonian Ministry of Education and Research Funding (TK214)
European Regional Development Fund (2014-2020.4.01.15-0012 GENTRANSMED)
Estonian Research Council grants (PRG1189 and PRG1911)
Article History
Received: 10 April 2026
Accepted: 28 July 2026
First Online: 5 August 2026
Declarations
Ethical approval: The study was carried out according to the Declaration of Helsinki and approved by the Research Ethics Committee of the University of Tartu (protocol code 269/T-9, 17 April 2017). The participants were recruited at the dermatology clinic of the Tartu University Hospital where they signed written informed consent forms.
Conflicts of interest: The authors declare no conflict of interest.