title: Issue editors' notes.
authors.forename: Doris
authors.initials: D
authors.lastname: Sommer
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior; D001154:Art; D002947:Cities; D006801:Humans; D007857:Leadership; D012309:Risk-Taking; D014505:Urban Population; D014754:Violence / Q000517:prevention & control*