Due, P., Damsgaard, M., Madsen, K., Nielsen, L., Rayce, S., & Holstein, B. (2018). Increasing prevalence of emotional symptoms in higher socioeconomic strata: Trend study among Danish schoolchildren 1991-2014. Scandinavian Journal of Public Health, 1403494817752520. https://doi.org/10.1177/1403494817752520 (Original work published 2018)

Johnsen, N., Toftager, M., Melkevik, O., Holstein, B., & Rasmussen, M. (2017). Trends in social inequality in physical inactivity among Danish adolescents 1991-2014. SSM - Population Health, 3, 534-538. https://doi.org/10.1016/j.ssmph.2017.04.003