Swart, J., De Villiers, R., Francois, R., Rademan, F., & Thom, G. (2019). A tale of two sit-bones: The cyclist’s ischial hygroma (Perineal nodular induration). South African Journal of Sports Medicine, 31(1), 1–4. https://doi.org/10.17159/2078-516X/2019/v31i1a5641