Leung, Shek Ming, Kin Chun Eagle Li, Pui Yan Leung, Hau Wan Lo, Sin Man Li, Yuen Ching Lui, Shuk Yi Leung, and Ka Wing Leung. “An Online Questionnaire Study about Factors Affecting First Aid Knowledge of Citizens in Hong Kong”. International Journal Of Community Medicine And Public Health 9, no. 11 (October 29, 2022): 4015–4021. Accessed November 16, 2025. https://www.ijcmph.com/index.php/ijcmph/article/view/10201.