Cell phone usage and sleep quality in students?

Vpliv mobilnih telefonov na spanje študentske populacije.

P: students 

I: cell phone

O: sleep

P: "Students"[Mesh] OR student*[tiab] 

O "Sleep"[Mesh] OR sleep*[tiab]  

I: "Cell Phone"[Mesh] OR "cell phone*"[tiab] OR "cellular phone*"[tiab] OR "cellular telephone*"[tiab] OR "mobile phone*"[tiab] OR "mobile telephone*"[tiab]