Cross-Sectional and Longitudinal Evaluation of the Social Network Use Disorder and Internet Gaming Disorder Criteria - Bouna-Pyrrou, Polyxeni; Aufleger, Birte; Braun, Simona; Gattnar, Manja; Kallmayer, Sofia; Wagner, Helena; Kornhuber, Johannes; Mühle, Christiane; Lenz, Bernd (Friedrich-Alexander-Universität Erlangen-Nürnberg, 2018)