J. M. do Prado, L. F. S. Kurebayashi, and M. J. P. da Silva, “Experimental and placebo auriculotherapy for stressed nurses: randomized controlled trial”, Rev. Esc. Enferm. USP, vol. 52, p. e03334, Jan. 2018, doi: 10.1590/s1980-220x2017030403334.