title: [Course of pregnancy and labor in primiparas over than 30-years-old].
mesh_terms: D000328:Adult; D000367:Age Factors; D005260:Female; D006801:Humans; D008423:Maternal Age; D011247:Pregnancy; D018566:Pregnancy, High-Risk
vernacular_title: Protichane na bremennostta i razhdaneto u vuzrastni purvorazhdashti nad 30-godishna vuzrast.