M. M. T. de Araújo, M. J. P. da Silva, and A. C. G. Puggina, “Nonverbal communication as an iatrogenic factor”, Rev. Esc. Enferm. USP, vol. 41, no. 3, pp. 419–425, Sep. 2007, doi: 10.1590/S0080-62342007000300011.