Health risk assessment of benzene, toluene, ethylbenzene, and xylene among occupational and residential populations at landfill, Indonesia - Intan Nur'azizah Rahman; Katharina Oginawati; Benno Rahardyan; Muhayatun Santoso; Dikdik Sidik Purnama; Nurul Fahimah; Muhammad Amin (Frontiers in Sustainable Cities, 2026)