TY  - GEN
AU  - Bergsjø,P
TI  - [Choice of oral contraceptives]
SN  - 0029-2001
PY  - 1979///0925
KW  - Contraceptives, Oral
KW  - Contraceptives, Oral, Synthetic
KW  - Female
KW  - Humans
N1  - Publication Type: Journal Article
ER  -