Columbia subject headings:
Collaborative Perinatal Project (U.S.)--Congresses.
Edema--Congresses.
Hypertension in pregnancy--Congresses.
Proteinuria--Congresses.
Toxemia of pregnancy--Diagnosis--Congresses.
Harvard subject headings:
Collaborative Perinatal Project (U.S.)--Congresses.
Edema--Congresses.
Hypertension in pregnancy--Congresses.
Proteinuria--Congresses.
Toxemia of pregnancy--Diagnosis--Congresses.
Princeton subject headings: