“…Studies about spoken voice show that the prevalence of some degree of dysphonia, assessed or self-reported in individuals who use their voice at work can reach 35,5% 29 , 43,3% 31 , 48% 7 , 50% 22,32 , 70% 33,34 , 80,7% 35 , 85% 26 e até 97,2% 36 , among others, a percentage higher than the 20% mentioned by colleagues.…”