AUTHOR=Li Chunhua , Chen Zhangqing , Wu Wangchun , Gao Bin , Zou Lingfeng TITLE=Population aging, technological innovation and industrial differentiation JOURNAL=Frontiers in Public Health VOLUME=13 YEAR=2025 URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2025.1502713 DOI=10.3389/fpubh.2025.1502713 ISSN=2296-2565