Effect modification by aging on the associations of nicotine exposure with cognitive impairment among Chinese elderly

Jian Hou, Chao Huang, Bo Zhu, Wei Liu, Qing qing Zhu, Lu Wang, Tian Li, Chun jie Yuan, Shao yang Lai, De sheng Wu, Fei qi Zhu, Jia fei Zhang, Jia Huang, Er wei Gao, Yi dan Huang, Lu lin Nie, Shao you Lu, Xi fei Yang, Li Zhou, Fang YeJing Yuan, Jian jun Liu