Problems in retrieving national data on births: questionnaire survey.
Smith
L
L
King's Fund, London W1M 0AN. colls@kehf.org.uk
D002648:Child; D002669:Child Welfare / Q000706:statistics & numerical data*; D002675:Child, Preschool; D003625:Data Collection / Q000379:methods / Q000592:standards*; D016208:Databases, Factual / Q000592:standards*; D005260:Female; D006306:Health Surveys; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D008429:Maternal Welfare / Q000706:statistics & numerical data*; D011795:Surveys and Questionnaires; D006113:United Kingdom / Q000453:epidemiology