Reproductive history and risk of cognitive impairment in elderly women: a cross-sectional study in eastern China Manuscript Number: 15-0444R1 Author(s): Ting-Rui Chen, Fan He, Fu-Dong Li, Jun-Fen Lin, Shang-Tong Lin, Xiao-Peng Shang, Wei Shen, Xin-Yi Wang, Yuan-Yuan Xiao, Yu-Jia Zhai