Columbia subject headings:
Breast--Cancer--Etiology--Congresses.
Endocrine gynecology--Congresses.
Hormones, Sex--Physiological effect--Congresses.
Harvard subject headings:
Breast--Cancer--Endocrine aspects--Congresses
Endocrine gynecology--Congresses
Hormones, Sex--Physiological effect--Congresses.
Princeton subject headings: