title: Letter to the Editor.
authors.affiliation: Universidade de São Paulo - USP - São Paulo (SP), Brasil.
authors.forename: Claudia Regina
authors.initials: CR
authors.lastname: Andrade
mesh_terms: D035843:Biomedical Research / Q000592:standards; D002986:Clinical Trials as Topic / Q000592:standards*; D019937:Diagnostic Techniques and Procedures / Q000295:instrumentation* / Q000592:standards*; D006801:Humans; D007806:Language Disorders / Q000175:diagnosis; D013064:Speech Disorders / Q000175:diagnosis; D013066:Speech-Language Pathology; D054928:Validation Studies as Topic