Does the medical insurance system really achieved the effect of poverty alleviation for the middle-aged and elderly people in China? Characteristics of vulnerable groups and failure links

• Meiyan MaHarbin Medical University
• Ye LiHarbin Medical University
• Nianshi WangHarbin Medical University
• Qunhong WuHarbin Medical University
• Linghan ShanHarbin Medical University
• Mingli JiaoHarbin Medical University
• Xuelian FuSecond Affiliated Hospital of Harbin Medical University
• Heng LiShanghai Jiao Tong University
• Tao SunHangzhou Normal University
• Bin Yi
• Wanxin TianHarbin Medical University
• Qi XiaHarbin Medical University
• Baoguo ShiMinzu University of China
• Yanhua HaoHarbin Medical University
• Hui YinHarbin Medical University
• Ning NingHarbin Medical University
• Lijun GaoHarbin Medical University
• Libo LiangHarbin Medical University
• Jiahui WangHarbin Medical University