TY  - GEN
AU  - Olsen,J
TI  - Options in making use of pregnancy history in planning and analysing studies of reproductive failure
SN  - 0143-005X
PY  - 1994///0621
KW  - Birth Order
KW  - Epidemiologic Methods
KW  - Female
KW  - Humans
KW  - Parity
KW  - Pregnancy
KW  - Pregnancy Outcome
KW  - Reproductive History
KW  - Risk Factors
N1  - Publication Type: Journal Article; Research Support, Non-U.S. Gov't
UR  - https://doi.org/10.1136/jech.48.2.171
ER  -