C. C. Carvalho, E. de C. L. Chaves, D. H. Iunes, T. P. Simão, C. da S. M. Grasselli, and C. G. Braga, “ Effectiveness of prayer in reducing anxiety in cancer patients ”, Rev. Esc. Enferm. USP, vol. 48, no. 4, pp. 684–690, Aug. 2014, doi: 10.1590/S0080-623420140000400016.