L. Lindsay and  S. A. Coleman and  D. Kerr and  B. J. Taylor and  A. Moorhead,  Classification of Health Risk Factors to Predict the Risk of Falling in Older Adults .   journal   = {International Journal of Medical and Health Sciences}, [online]. World Academy of Science, Engineering and Technology.
    May 2019, vol. 150(6). 306 - 309
    [viewed 21 October 2019]. Available from: https://publications.waset.org/pdf/10010496.