Smoking in pregnancy. Retrospective study of the influence of some factors on birth weight.
D001722:Birth Order; D001835:Body Weight; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D008423:Maternal Age; D011247:Pregnancy; D012189:Retrospective Studies; D012907:Smoking; D012959:Socioeconomic Factors; D013223:Statistics as Topic; D013548:Sweden