1. Bergen, G., Stevens, M.R. and Burns, E.R., Falls and Fall Injuries Among Adults Aged ≥65 Years - United States (2014). MMWR Morb Mortal Wkly Rep 2016;65:993-998. DOI: http://dx.doi.org/10.15585/mmwr.mm6537a2.
2. Dionyssiotis, Y., Analyzing the problem of falls among older people, International Journal of General Medicine (2012), 5:805-13. doi: 10.2147/IJGM.S32651. Epub 2012 Sep 28.
3. Doi, Y., Ueno, M. and Izumi, K., The Connection between Circumstances Regarding Falls among the Elderly Woman Who Reside in Their Own Homes and Housing Environment, Journal of Japan Academy of Community Health Nursing, Vol.13, No.2 (2011), pp.46-53.
4. Ehara, Y. and Yamamoto, S., Introduction to Clinical Gait Measuring, Ishiyaku Publishers, Inc. (2008) (in Japanese).
5. Hatanaka, Y., PHYSICAL THERAPY OCCUPATIONAL THERAPY VISUAL TEXT, YODOSHA (2015) (in Japanese).