HAMERLA, A., J. GAWRON, R. SZYDŁOWSKI, M. . BODERA, H. PORWOLIK, A. PORWOLIK, B. CZARNECKI, A. KAŹMIERSKA, ŁUKASZ GRAJCAREK, and P. CYRAN. “The Effect of Excessive Smartphone Use on Mental Wellbeing, Sleep Quality and Active Lifestyle Behaviours”. Pakistan Journal of Medical & Health Sciences, vol. 20, no. 01, Jan. 2026, pp. 3-6, doi:10.53350/pjmhs02026201.2.