R. V. . Araujo, A. F. C. . Fernandes, I. S. . Nery, E. M. L. R. . Andrade, L. T. . Nogueira, and F. H. C. . Azevedo, “Meditation effect on psychological stress level in women with breast cancer: a systematic review”, Rev. Esc. Enferm. USP, vol. 53, p. e03529, Dec. 2019, doi: 10.1590/s1980-220x2018031303529 .