the causal factors of voice disorders in the pediatric patient : chromosomal defects , congenital deformities , mass laryngeal lesions , inflammations and infections , traumata , neurologic disorders , metabolic and endocrine disorders , deafness , velopharyngeal insufficiency , adolescent voice change , vocal abuse and misuse , and musculoskeletal tension disorders .
C0042940
of
C0023078
laryngeal