AUTHOR=Shen Yupeng , Meng Yiming , Shan Yiyue , Zhang Shichen , Tang Daorui , Sun Zhengxiu TITLE=Has integrated medical insurance scheme enhanced happiness of returning migrant workers? Evidence from China JOURNAL=Frontiers in Public Health VOLUME=12 YEAR=2024 URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2024.1467256 DOI=10.3389/fpubh.2024.1467256 ISSN=2296-2565