3 Result(s)
within
Stein Emil Vollset
Pediatrics
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Article
Open AccessDifferences in perinatal and infant mortality in high-income countries: artifacts of birth registration or evidence of true differences?
Variation in birth registration criteria may compromise international comparisons of fetal and infant mortality. We examined the effect of birth registration practices on fetal and infant mortality rates to de...
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Article
Self-reported smoking status and plasma cotinine concentrations among pregnant women in the Norwegian Mother and Child Cohort Study
Underreporting of smoking in epidemiologic studies is common and may constitute a validity problem, leading to biased association measures. In this prospective study, we validated self-reported tobacco use aga...
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Article
Nested Case-Control Study of One-Carbon Metabolites in Mid-Pregnancy and Risks of Cleft Lip With and Without Cleft Palate
Evidence exists for an association between use of vitamin supplements with folic acid in early pregnancy and reduced risk for offspring with cleft lip with/without cleft palate (CLP). A few observations have b...
