BACKGROUND: in a well established Chinese cohort of older adults. METHODS: exposure in the population aged 65 years and older in China in 2010. FINDINGS: exposure. INTERPRETATION: increases. FUNDING: National Natural Science Foundation of China, National High-Level Talents Special Support Plan of China for Young Talents, US National Aeronautics and Space Administration, and the Columbia University Global Policy Initiative.
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Li et al. (2018) studied this question.