Chinese Journal of Epidemiology, Volume 42, Issue 9,2021, Pages 1553-1558, doi:10.3760/cma.j.cn112338-20210319-00220
Chinese Journal of Epidemiology, Volume 42, Issue 9,2021, Pages 1559-1565, doi:10.3760/cma.j.cn112338-20210319-00222
Chinese Journal of Epidemiology, Volume 42, Issue 9,2021, Pages 1641-1649, doi:10.3760/cma.j.cn112338-20201208-01386
Chinese Journal of Epidemiology, Volume 42, Issue 9,2021, Pages 1700-1708, doi:10.3760/cma.j.cn112338-20210323-00242
Chinese Journal of Epidemiology, Volume 42, Issue 9,2021, Pages 1566-1572, doi:10.3760/cma.j.cn112338-20210319-00221