[Epidemiological aspects of premature labor].
D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D008423:Maternal Age; D007752:Obstetric Labor, Premature / Q000209:etiology*; D009790:Occupations; D010298:Parity; D011247:Pregnancy; D012959:Socioeconomic Factors; D013557:Switzerland
Aspects épidémiologiques de l'accouchement prématuré.