Nascimento, Lucila Castanheira, et al. “Playing in the Waiting Room of a children’s Outpatient Clinic: The View of Health Professionals”. Revista Da Escola De Enfermagem Da USP, vol. 45, no. 2, Apr. 2011, pp. 465-72, https://doi.org/10.1590/S0080-62342011000200023.