title: Patterns of medication in early pregnancy: a preliminary report from the Jerusalem perinatal study.
mesh_terms: D000014:Abnormalities, Drug-Induced / Q000453:epidemiology*; D000328:Adult; D000367:Age Factors; D004358:Drug Therapy; D004493:Education; D004641:Emigration and Immigration; D005006:Ethnicity; D005260:Female; D005865:Gestational Age; D006801:Humans; D007557:Israel; D008423:Maternal Age; D011247:Pregnancy; D011248:Pregnancy Complications / Q000453:epidemiology; D012959:Socioeconomic Factors