1. Ferri CP, Prince M, Brayne C, et al. Global prevalence of dementia: a Delphi consensus study. The Lancet 2005;366:2112-2117. https://doi.org/10.1016/s0140-6736(05)67889-0
2. Mathers C, Leonardi M. Global burden of dementia in the year 2000: summary of methods and data sources. World Health Organization 2006 (wwwsemanticscholarorg. Ref Type: Generic. Available: https://www.academia.edu/47453483/Global_burden_of_dementia_in_the_year_2000_summary_of_methods_and_data_sources).
3. Weiner MF. Clinical diagnosis of cognitive dysfunction and dementing illness. In: Weiner MF, Lipton AM, Eds. The dementias; diagnosis, treatment, and research. Washingtgon, D.C.: American Psychiatric Publishing, Inc. 2003.
4. Cumming JL. Depression and Parkinson’s disease: a review. Am J Psychiatry 1992;149:443-454. https://doi.org/10.1176/ajp.149.4.443
5. Solomon K, Szwabo P. Psychotherapy for patients with dementia. In: Morley JE, Coe R, Strong R, et al., Eds. Memory function and aging-related disorders. New York: Springer Publishing Company 1992, pp. 295-319.