Machine learning reveals microbiome differences by periodontitis severity. - Seo, Soo Hyun; Lee, Jae Won; Oh, Sujin; Hong, Jin-Sil; Lee, Ban Seok; Kwon, Sun Jae; Kim, Keun-Suh; Park, Jung Soo; Heo, Ju Sun; Ahn, Ki Hoon; Lee, Hyo‐Jung; Park, Kyoung Un (PLoS ONE, 2026)