2024 Grade‐Specific Prevalence and Adjacent‐Grade Differences in Illicit Drug Use Among Japanese Junior and Senior High School Students. - Mizuno, Satomi; Inoura, Satoshi; Kitamura, Maki; Matsumoto, Toshihiko; Kitagaki, Kunihiko; Koide, Akihiro; Takehara, Kenji; Shimane, Takuya (Psychiatry & Clinical Neurosciences Reports, 2026)