[What influence does social legislation have on prematurity?].
D001699:Biometry; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007234:Infant, Premature / Q000706:statistics & numerical data*; D008429:Maternal Welfare / Q000331:legislation & jurisprudence*
INFANT, PREMATURE/statistics; MATERNAL WELFARE/legislation