Reas, D. L., Nygård, J. F., Svensson, E., Sørensen, T., & Sandanger, I. (2007). Changes in body mass index by age, gender, and socio-economic status among a cohort of Norwegian men and women (1990–2001). BioMed Central.

Reas, Deborah L., Jan F. Nygård, Elisabeth Svensson, Tom Sørensen, und 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.