Columbia subject headings:
Chronic lymphocytic leukemia--Risk factors--Congresses.
Leukemia--Complications--Congresses.
Lymphocytic leukemia--Risk factors--Congresses.
Lymphoproliferative disorders--Risk factors--Congresses.
Harvard subject headings:
Chronic lymphocytic leukemia--Risk factors--Congresses.
Leukemia--Complications--Congresses.
Lymphocytic leukemia--Risk factors--Congresses.
Lymphoproliferative disorders--Risk factors--Congresses.
Princeton subject headings:
Chronic lymphocytic leukemia--Risk factors--Congresses.
Leukemia--Complications--Congresses.
Lymphocytic leukemia--Risk factors--Congresses.
Lymphoproliferative disorders--Risk factors--Congresses.