A prospective study of early pregnancy metal concentrations and gestational diabetes mellitus based on a birth cohort in Northwest China. - Zhao, Doudou; Chen, Jie; Li, Xiayang; Huang, Yishuai; Zhang, Yu; Zhao, Fuyang; Liu, Danmeng; Shan, Li; Mi, Yang; Shang, Lei; Qu, Pengfei (BMC Pregnancy & Childbirth, 2025)