Risk Factors for Preterm Birth Subtypes
Berkowitz, Gertrud S., Blackmore-Prince, Cheryl, Lapinski, Robert H., Savitz, David A.Volume:
9
Journal:
Epidemiology
DOI:
10.1097/00001648-199805000-00011
Date:
May, 1998
File:
PDF, 486 KB
1998