Russian Regional Differences in Allele Frequencies of CFTR Gene Variants: Genetic Monitoring of Infertile Couples. - Glotov AS; Chernykh VB; Solovova OA; Polyakov AV; Donnikov MY; Kovalenko LV; Barbitoff YA; Nasykhova YA; Lazareva TE; Glotov OS (Genes, 2023)