AUTHOR=Yi Duan , Yang Mingyuan , Luo Qipeng , Li Hong , Kong Liang , Cheng Qinghao TITLE=Bidirectional relationship between pain and sleep disturbance in middle-aged and older adults: evidence from the China health and retirement longitudinal study JOURNAL=Frontiers in Psychiatry VOLUME=15 YEAR=2024 URL=https://www.frontiersin.org/journals/psychiatry/articles/10.3389/fpsyt.2024.1485822 DOI=10.3389/fpsyt.2024.1485822 ISSN=1664-0640