Columbia subject headings:
Biomedical materials--Congresses.
Implants, Artificial--Materials--Congresses.
Middle ear--Surgery--Congresses.
Surgery, Plastic--Congresses.
Harvard subject headings:
Biomedical materials--Congresses
Conference papers and proceedings.
Implants, Artificial--Materials--Congresses.
Middle ear--Surgery--Congresses.
Surgery, Plastic--Congresses
Princeton subject headings: