Teachers' Perceptions of the Impact of Stuttering on the Daily Life of Their Students Who Stutter [La Perception Des Professeurs Concernant L'impact Du Bégaiement Au Quotidien de Leurs Élèves Bégues] [Perceções dos Professores Sobre O Impacto da Gaguez No Quotidiano dos Seus Alunos Que Gaguejam]