Pillay, JD, T Kolbe-Alexander, M Achmat, M Carstene, and EV Lambert. 2009. “Are Point-of-Decision Prompts in a Sports Science and Medicine Centre Effective in Changing the Prevalence of Stair Usage? A Preliminary Study”. South African Journal of Sports Medicine 21 (2). https://doi.org/10.17159/2078-516X/2009/v21i2a299.