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Article
Bias Arising in Case-Control Studies from Selection of Controls from Overlapping Groups
January 01, 1989
Article
Multivitamin Folic-Acid Supplementation in Early-Pregnancy Reduces the Prevalence of Neural-Tube Defects
January 01, 1989
Article
Carcinogenicity of Dark Liquor
January 01, 1989
Article
Predictive Values, Relative Risks, and Overall Benefits of High and Low Maternal Serum Alpha-Fetoprotein Screening in Singleton Pregnancies - New Epidemiologic Data
January 01, 1989
Article
A strengthening programme for weak associations
December 01, 1988