TY  - GEN
AU  - Savitz,D A
AU  - Blackmore,C A
AU  - Thorp,J M
TI  - Epidemiologic characteristics of preterm delivery: etiologic heterogeneity
SN  - 0002-9378
PY  - 1991///0314
KW  - Abortion, Induced
KW  - statistics & numerical data
KW  - Black or African American
KW  - Female
KW  - Fetal Membranes, Premature Rupture
KW  - epidemiology
KW  - Humans
KW  - Obstetric Labor, Premature
KW  - Pregnancy
KW  - Risk Factors
KW  - Socioeconomic Factors
KW  - Terminology as Topic
KW  - United States
KW  - White People
N1  - Publication Type: Journal Article; Review
UR  - https://doi.org/10.1016/s0002-9378(11)80001-3
ER  -