Columbia subject headings:
Deafness--Etiology--Congresses.
Deafness--Genetic aspects--Congresses.
Ear--Abnormalities--Congresses.
Harvard subject headings:
Deafness--Etiology--Congresses.
Deafness--Genetic aspects--Congresses.
Ear--Abnormalities--Congresses
Princeton subject headings:
Deafness--Etiology--Congresses.
Deafness--Genetic aspects--Congresses.
Ear--Abnormalities--Congresses.