Sasaki, S., Nagano, Y., & Koyama, K. (2023). Factors Associated with Knee and Heel Pain in Children: An Observational Web-Based Survey for 1,200 Parents with Young Japanese Footballers Aged in 8–12 Years. European Journal of Sport Sciences, 2(2), 59–67. https://doi.org/10.24018/ejsport.2023.2.2.75