A Comparison of Three Methods to Measure Asthma in Epidemiologic Studies: Results from the Danish National Birth Cohort

• Susanne Hansen ,

  * E-mail: suu@ssi.dk

  Affiliation Centre for Fetal Programming, Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark

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• Marin Strøm,

  Affiliation Centre for Fetal Programming, Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark

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• Ekaterina Maslova,

  Affiliations Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts, United States of America, Department of Nutrition, Harvard School of Public Health, Boston, Massachusetts, United States of America

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• Erik Lykke Mortensen,

  Affiliation Institute of Public Health and Center for Healthy Aging, University of Copenhagen, Copenhagen, Denmark

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• Charlotta Granström,

  Affiliation Centre for Fetal Programming, Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark

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• Sjurdur F. Olsen

  Affiliations Centre for Fetal Programming, Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark, Department of Nutrition, Harvard School of Public Health, Boston, Massachusetts, United States of America

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