PLoS ONE, 16(April):e0238667, 1-18. Public Library of Science Whipp, A M, Vuoksimaa, E, Bolhuis, K, de Zeeuw, E L, Korhonen, T, Mauri, M, Pulkkinen, L, Rimfeld, K, Rose, R J, van Beijsterveldt, C E M, Bartels, M, Plomin, R, Tiemeier, H, Kaprio, J & Boomsma, D I 2021, ' Teacher-rated aggression and co-occurring behaviors and emotional problems among schoolchildren in four population-based European cohorts ', PLoS ONE, vol. 16, no. April, e0238667, pp. 1-18 . https://doi.org/10.1371/journal.pone.0238667 PLoS ONE, 16(4 April):e0238667. Public Library of Science PLoS ONE, Vol 16, Iss 4, p e0238667 (2021) PLoS ONE