The Birmingham oral contraceptive trial.
P
P
ECKSTEIN
J A
JA
WATERHOUSE
G M
GM
BOND
W G
WG
MILLS
D M
DM
SANDILANDS
D M
DM
SHOTTON
D003267:Contraception; D003270:Contraceptive Agents; D003276:Contraceptives, Oral; D005260:Female; D006801:Humans
D003270:Contraceptive Agents; D003276:Contraceptives, Oral
CONTRACEPTIVES, ORAL