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Reas, Deborah L., Jan F. Nygård, Elisabeth Svensson, Tom Sørensen, and Inger Sandanger. Changes in Body Mass Index By Age, Gender, and Socio-economic Status Among a Cohort of Norwegian Men and Women (1990–2001). BioMed Central, 2007.

Reas, Deborah L., et al. Changes in Body Mass Index By Age, Gender, and Socio-economic Status Among a Cohort of Norwegian Men and Women (1990–2001). BioMed Central, 2007.