AUTHOR=Shen Ying , Zhou Yongjie , Ren Shuyang , Li Yanyan , Liu Yongshi , Zhou Rong , Fan Xiwang , Xie Guangping TITLE=Relations between peer bullying and adolescent depression: the mediating effect of cellphone usage JOURNAL=Frontiers in Psychiatry VOLUME=Volume 16 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/psychiatry/articles/10.3389/fpsyt.2025.1486628 DOI=10.3389/fpsyt.2025.1486628 ISSN=1664-0640