Columbia subject headings:
Hodgkin's disease--Congresses.
Hodgkin's disease--Treatment--Congresses.
Lymphomas--Congresses.
Lymphomas--Treatment--Congresses.
Harvard subject headings:
Hodgkin's disease--Congresses.
Hodgkin's disease--Treatment--Congresses.
Lymphomas--Congresses.
Lymphomas--Treatment--Congresses.
Princeton subject headings: