Pacific Grove / Boston / New York / Kansas City / Philadelphia / Park / Brookline / Toronto / City / Falls / /
Company
Epidemiology Resources Inc / Cambridge University Press / Hoechst Marion Roussel Inc. / Duxbury Press / Aspen Publishers Inc / Pfizer Inc. / Cox / Case / Bloomberg / Glaxo-Wellcome Company / MRC Vitamin Study Research Group / Conceptus / John Wiley & Sons / /
Country
Greenland / United States / Canada / United Kingdom / China / / /
Facility
National Institute of Child Health / College Park / University School / /
neural tube defects / fingers and lung cancer / Maternal obesity / spontaneous abortions / birth defect / obesity / birth defects / cancer / disease / non-dietrelated cancer / occurrent neural tube defects / lung cancer / non-diet-related cancer / infection / certain birth defects / /
MedicalTreatment
counseling / /
Organization
Cambridge University / Department of Epidemiology / National Heart / Lung / and Blood Institute / Harvard School of Public Health / Slone Epidemiology Unit / HD27697 / Boston University School of Public Health / National Institute of Child Health and Human Development / /
Person
Pearl J. Confounding / Pearl J. Causal / Miguel A. Hernán / Am J Epidemiol Vol / Am J Epidemiol / James Robins / /
Position
investigator / Walker / RT / /
Product
DAGs / folic acid / /
ProgrammingLanguage
C / /
ProvinceOrState
New York / Missouri / Pennsylvania / North Carolina / Massachusetts / /
American Journal of Epidemiology Copyright © 2002 by the Johns Hopkins Bloomberg School of Public Health All rights reserved Vol. 155, No. 2 Printed in U.S.A.