Counting the changes in childbirth: trends and gaps in national statistics.
Smith
J P
JP
D004739:England / Q000453:epidemiology; D005260:Female; D006700:Home Childbirth / Q000706:statistics & numerical data* / Q000639:trends; D006801:Humans; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D008427:Maternal Health Services / Q000458:organization & administration; D011247:Pregnancy / Q000706:statistics & numerical data*; D011256:Pregnancy Outcome / Q000453:epidemiology; D014852:Wales / Q000453:epidemiology