Figueiredo, Joanemile Pacheco, et al. “ Diagnostic Assessment of Occupational Asthma Due to Persulfate Salts in a Professional Hairdresser: A Case Report ”. Clinics, vol. 63, no. 1, Jan. 2008, pp. 149-50, https://doi.org/10.1590/S1807-59322008000100026.