The couples' distinct effects of metals exposure on intermediate and pregnancy outcomes of in vitro fertilization treatment: A prospective cohort study - Qian Li; Xun Su; Zihan Xia; Duoxu Ji; Rui Dong; Tao Yin; Xinyu Yue; Dongyang Zhang; Yunxia Cao; Dongmei Ji; Chunmei Liang (Environmental Research, 2026)