Implementation research on the intervention mode of “Comorbidity—Co-causes—Joint-prevention” comprehensive demonstration district of depression and obesity among children and adolescents in Beijing: study protocol

• Xinxin WangLinyi University
• Ping-Ping GuiCapital Medical University
• Junkang LinPeking University
• Yan-Jie ZhaoCapital Medical University
• Xiaorui ZhangCapital Medical University
• Yi SongPeking University
• Linghui MengCapital Medical University