Kaess, Michael and Klar, Johanna and Kindler, Jochen and Parzer, Peter and Brunner, Romuald and Carli, Vladimir and Sarchiapone, Marco and Hoven, Christina W and Apter, Alan and Balazs, Judit and Barzilay, Shira and Bobes, Julio and Cozman, Doina and Gomboc, Vanja and Haring, Christian and Kahn, Jean-Pierre and Keeley, Helen and Meszaros, Gergely and Musa, George J and Postuvan, Vita and Saiz, Pilar and Sisask, Merike and Varnik, Peeter and Resch, Franz and Wasserman, Danuta (2021) Excessive and pathological Internet use - risk-behavior or psychopathology? Addictive Behaviors, 123, 107045. doi: 10.1016/j.addbeh.2021.107045.