Chemical element concentrations in cord whole blood and the risk of preterm birth for pregnant women in Guangdong, China

• Zhaokun WangPeking University
• Shaodan HuangPeking University
• Wenlou ZhangPeking University
• Xiao‐Wen ZengSun Yat-sen University
• Chu ChuSun Yat-sen University
• Qingqing LiSun Yat-sen University
• Xin-Xin CuiSun Yat-sen University
• Qi-Zhen WuSun Yat-sen University
• Guang‐Hui DongSun Yat-sen University
• Jinbo Huang
• Liling LiuThe People's Hospital of Guangxi Zhuang Autonomous Region
• Weihong TanThe People's Hospital of Guangxi Zhuang Autonomous Region
• Xue‐Jun ShangNanjing General Hospital of Nanjing Military Command
• Minli Kong
• Furong DengPeking University