W. Kraak, B. Bernardo, H. Gouws, A. Loubser, J. Vuuren, and M. Coetzee, “Concussion knowledge and attitudes amongst Stellenbosch University hostel rugby players”, SA J Sports Med, vol. 30, no. 1, pp. 1–5, Mar. 2018, doi: 10.17159/2078-516X/2018/v30i1a4404.