
Although Joel Ray and associates[1][1] may have adequately controlled for confounding in their study of neural tube defects among children born in Ontario, the study may suffer from bias in data collection, analysis and interpretation, and the conclusions drawn may therefore be premature. The study
Ontario, Pregnancy Outcome, Abortion, Induced, Prenatal Care, Risk Assessment, Folic Acid, Bias, Pregnancy, Indians, North American, Humans, Female, Neural Tube Defects
Ontario, Pregnancy Outcome, Abortion, Induced, Prenatal Care, Risk Assessment, Folic Acid, Bias, Pregnancy, Indians, North American, Humans, Female, Neural Tube Defects
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