Using databases to address important but neglected clinical questions.
Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA.
B
B
Solomon
D002585:Cesarean Section / Q000706:statistics & numerical data*; D004314:Down Syndrome / Q000453:epidemiology*; D005260:Female; D006801:Humans; D011247:Pregnancy