**Lutz Wartberg and Rudolf Kammerl**

Empirical Relationships between Problematic Alcohol Use and a Problematic Use of Video Games, Social Media and the Internet and Their Associations to Mental Health in Adolescence Reprinted from: *Int. J. Environ. Res. Public Health* **2020**, *17*, 6098, doi:10.3390/ijerph17176098 . . **589**
