Dabare, Prasangi M., Indu Waidyatilaka, Ranil Jayawardena, Rajitha Wickremasinghe, Andrew P. Hills, Pujitha Wickramasinghe, and Pulani Lanerolle. “School-Based Physical Activity Intervention in 11-13-Year-Olds: Study Protocol for Cluster Randomized Controlled Trial”. International Journal of Clinical Trials 6, no. 3 (July 24, 2019): 129–137. Accessed December 25, 2025. https://www.ijclinicaltrials.com/index.php/ijct/article/view/325.