1. Subdural hematoma in adults. etiology, clinical features, and diagnosis. (2020). Accessed: October 27, 2020: https://www.uptodate.com/contents/subdural-hematoma-in-adults-etiology-clinical-features-and-diagnosis/.
2. Chronic subdural hematoma: differences between unilateral and bilateral occurrence;Hsieh CT;J Clin Neurosci,2016
3. Developing a model of chronic subdural hematoma;Tang J,2011
4. 65 and older population grows rapidly as baby boomers age. (2020). Accessed. October 27, 2020: https://www.census.gov/newsroom/press-releases/2020/65-older-population-grows.html.
5. 2017 national population projections tables. main series. (2017). Accessed: October 27, 2020: https://www.census.gov/data/tables/2017/demo/popproj/2017-summary-tables.html.