Columbia subject headings:
Harvard subject headings:
Diseases--Europe--History--Congresses.
Europe--Statistics, Medical--History--Congresses.
Medicine--Europe--History--Congresses.
Mortality--Europe--History--Congresses.
Princeton subject headings:
Diseases--Europe--History--Congresses.
Europe--Statistics, Medical--History--Congresses.
Medicine--Europe--History--Congresses.
Mortality--Europe--History--Congresses.