M. F. Lima-Costa, S. V. Peixoto, D. C. Malta, C. L. Szwarcwald, and J. V. de M. Mambrini, “Informal and paid care for Brazilian older adults (National Health Survey, 2013)”, Rev. saúde pública, vol. 51, no. supl.1, p. 6s-, Jan. 2017, doi: 10.1590/s1518-8787.2017051000013.