Design and Validation of a Knowledge Questionnaire on Healthy Eating, Personal Hygiene, And Physical Activity (Hephpa) For 8–12-Year-Old School Children. Intl. J. Rel. [Internet]. 2024 Jun. 6 [cited 2026 May 12];5(11):85-96. Available from: https://ijor.co.uk/ijor/article/view/5180