The association of serum toxic metals and essential elements during early pregnancy with body mass index trajectory of infants during the first years: A prospective study oleh Yao Liu, Hengying Chen, Yingyu Zhou, Xiaoping Lin, Lanyao Yang, Bowen Zhan, Yuanhuan Wei, Ruifang Sun, Hongguang Yang, Zheqing Zhang, Guifang Deng