The Effects of Early Childhood Development Promotion Program on knowledge and Promotion Behaviors on Child Development of Parents and Caregivers in Mueang District, Lampang Province. AJNH [Internet]. 2021 Apr. 26 [cited 2026 Oct. 20];3(1):48-63. Available from: https://rsujournals.rsu.ac.th/index.php/ajnh/article/view/1609