G. K. Singh, S. D. Williams, H. Lee, E. K. Martin, M. Allender, and C. T. Ramey, “Trends in Physical and Mental Health, Mortality, Life Expectancy, and Social Inequalities Among American Indians and Alaska Natives, 1990-2019”, Int J Transl Med Res Public Health, vol. 5, no. 2, pp. 227–253, Jun. 2021.