Columbia subject headings:
Harvard subject headings:
Cancer--Chemotherapy--Social aspects--Congresses.
Cancer--Law and legislation--United States--Congresses.
Laetrile--Congresses.
Medical policy--United States--Congresses
Princeton subject headings:
Cancer--Chemotherapy--Social aspects--Congresses.
Cancer--Law and legislation--United States--Congresses.
Laetrile--Congresses.
Medical policy--United States--Congresses.