Diagnostic assessment of occupational asthma due to persulfate salts in a professional hairdresser: a case report - Figueiredo, Joanemile Pacheco; Pomiecinski, Fabiane; Yang, Ariana Campos; Castro, Fábio Fernandes Morato; Kalil Filho, Jorge Elias; Galvão, Clóvis Eduardo Santos (Clinics, 2008)