TY  - GEN
AU  - Trussell,J
TI  - Analyzing contraceptive failure
SN  - 0024-7758
PY  - 1999///0830
KW  - Contraceptive Devices
KW  - Equipment Failure
KW  - statistics & numerical data
KW  - Female
KW  - Humans
KW  - Mathematical Computing
KW  - Patient Compliance
KW  - Patient Education as Topic
KW  - Pregnancy
KW  - Pregnancy Rate
KW  - Reproducibility of Results
N1  - Publication Type: Letter
ER  -