Savitz, D A <br/><br/>
Epidemiologic characteristics of preterm delivery: etiologic heterogeneity.  [electronic resource] 

 -  American journal of obstetrics and gynecology  Feb 1991 
 - 467-71 p.  digital 
<br/><br/> Publication Type: Journal Article; Review 
<br/><br/><label>ISSN: </label>0002-9378 
<br/><br/><label>Standard No.: </label>10.1016/s0002-9378(11)80001-3  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Abortion, Induced--statistics & numerical data<br/>Black or African American<br/>Female<br/>Fetal Membranes, Premature Rupture--epidemiology<br/>Humans<br/>Obstetric Labor, Premature--epidemiology<br/>Pregnancy<br/>Risk Factors<br/>Socioeconomic Factors<br/>Terminology as Topic<br/>United States--epidemiology<br/>White People