TY  - GEN
AU  - Postlethwaite,D L
TI  - Pregnancy rate of a progestogen oral contraceptive
SN  - 0032-6518
PY  - 1979///0629
KW  - Adult
KW  - Ethynodiol Diacetate
KW  - Female
KW  - Humans
KW  - Middle Aged
KW  - Pregnancy
N1  - Publication Type: Journal Article
ER  -