AUTHOR=Wang Jing , Zhang Chengfeng , Zhang Yueqi , Liu Yuanyuan , Zhang Jingli , Fang Xingwei , Xia Wangyang , Xie Yanzhao , Lan Zhongli , Wang Jinhui , Lu Min , Chen Jun TITLE=Protocol for a nested case-control study: identifying neuroimaging biomarkers for the progression of subclinical depression and qi-stagnation constitution to major depressive disorder in adolescents JOURNAL=Frontiers in Psychiatry VOLUME=15 YEAR=2025 URL=https://www.frontiersin.org/journals/psychiatry/articles/10.3389/fpsyt.2024.1516846 DOI=10.3389/fpsyt.2024.1516846 ISSN=1664-0640