4. ERATA. Published article: Brigitta Szilágyi, Alexandra Makai, Péter Tardi, Viktória Kovácsné Bobály, Ágnes Simon-Ugron, Melinda Járomi, Back School Program: Development of Back Care Knowledge and Spine Disease Prevention and Trunk State Among 6-7 Year-Old-Children, STUDIA UNIVERSITATIS BABES-BOLYAI EDUCATIO ARTIS GYMNASTICAE, LXVI, 3, 2021, pp. 77 – 92. The sections below already contain the corrected text and numbers.