P. de J. Ribeiro, A. L. Sabatés, and C. A. Ribeiro, “The use of a therapeuthic toy as an instrument of nursing intervention when preparing the child to blood collection”, Rev. Esc. Enferm. USP, vol. 35, no. 4, pp. 420–428, Dec. 2001, doi: 10.1590/S0080-62342001000400016.