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. 2019 Sep 3;11:222. doi: 10.3389/fnagi.2019.00222

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Copyright © 2019 Lue, Pai, Chen, Hu, Huang, Lin, Wu, Jeng, Blennow, Sabbagh, Yan, Wang, Yang, Hatsuta, Morimoto, Takeda, Itoh, Liu, Xie and Chiu.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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The vertical bar on the y-axis shows the frequency as the percentage in the number of all participants in the cohort, and the x-axis indicates the age groups in 10-year intervals.