TY - JOUR A1 - Zhong, G. A1 - Wang, Y. A1 - Zhang, Y. A1 - Guo, J.J. A1 - Zhao, Y. T1 - Smoking is associated with an increased risk of dementia: A meta-analysis of prospective cohort studies with investigation of potential effect modifiers Y1 - 2015 DO - 10.1371/journal.pone.0118333 VL - 10 IS - 3 ER -