Genome-wide profiling of salivary promoter-region DNA methylation in periodontitis: the Tromsø Study. - Petrenya N; Jönsson B; Hadler-Olsen E; Larsson L; Flatberg A; Beisvåg V; Holde GE; Zykova SN; Asa'ad F (BMC medical genomics, 2026)