Work-related burnout and its associated factors among kindergarten teachers: a multi-center cross-sectional study in Ethiopia - Bezie, Anmut Endalkachew; Zewude, Girum Tareke; Tesfaye, Amensisa Hailu; Yirdaw, Asmare Asrat; Abie, Alebachew Bitew; Abere, Giziew (Frontiers in Public Health, 2025)