LAYLA FADHILAH RANGKUTI; YOLANDA PUTRI. The Relationship between Smartphone Addiction and Anxiety Levels in Adolescents at SMK Kesehatan Matorkis Padangsidimpuan. Science Publication: Journal of Public Health and Nutrition, [S. l.], v. 2, n. 2, p. 52–62, 2026. DOI: 10.64965/spjphn.v2i2.50. Disponível em: https://publication.sainspub.com/index.php/SJPHN/article/view/50. Acesso em: 22 oct. 2026.