Christopher, S. M., J. McCullough, S. J. Snodgrass, and C. Cook. “Do Alterations in Muscle Strength, Flexibility, Range of Motion, and Alignment Predict Lower Extremity Injury in Runners: A Systematic Review”. Archives of Physiotherapy, vol. 9, no. 1, Feb. 2019, doi:10.1186/s40945-019-0054-7.