Maternal stress and preterm birth. Am J Epidemiol
摘要：
The purpose of this study was to evaluate the accuracy of algorithms for the assignment of gestational age with the use of the last menstrual period and early ultrasound information. Gestational age estimates that are based on last menstrual period, ultrasound scanning, or their combination were compared among women who attended prenatal care clinics in central North Carolina (n = 3655) by an...
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关键词：
anxiety depression discrimination (psychology infant, premature pregnancy social support stress, psychological
DOI：
10.1093/aje/kwf176
被引量：
年份：
2003
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