**Ver ´onica Mar´ın-D´ıaz, Juan Manuel Mu ˜noz-Gonz´alez and Bego ˜na-Esther Sampedro-Requena**

Problematic Relationships with Smartphones of Spanish and Colombian University Students Reprinted from: *Int. J. Environ. Res. Public Health* **2020**, *17*, 5370, doi:10.3390/ijerph17155370 . . **551**
