title: National Perinatal Epidemiology Unit--a national asset.
authors.affiliation: Institute of Epidemiology and Health Services Research, University of Leeds.
authors.forename: R J
authors.initials: RJ
authors.lastname: Lilford
mesh_terms: D004813:Epidemiology / Q000458:organization & administration*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007253:Information Centers / Q000458:organization & administration*; D010500:Perinatology / Q000706:statistics & numerical data*; D011247:Pregnancy; D011635:Public Health Administration; D006113:United Kingdom