François M, Bonfils P, Leger J, Czernichow P, Narcy P
Department of Otorhinolaryngology, Hôpital Robert Debré, Faculty Bichat, University Paris VII, France.
J Pediatr. 1994 Mar;124(3):444-6. doi: 10.1016/s0022-3476(94)70373-6.
No significant difference was found for the auditory thresholds at conversational and high frequencies between 42 children with congenital hypothyroidism treated with L-thyroxine and an age-matched control group, regardless of the cause of the thyroid failure or hormone level and the age at the start of treatment.