China Journal of Modern Medicine, Volume 31, Issue 4,2021, Pages 1-8, doi:10.3969/j.issn.1005-8982.2021.04.001
China Journal of Modern Medicine, Volume 31, Issue 4,2021, Pages 26-30, doi:10.3969/j.issn.1005-8982.2021.04.005
China Journal of Modern Medicine, Volume 31, Issue 4,2021, Pages 49-57, doi:10.3969/j.issn.1005-8982.2021.04.009
China Journal of Modern Medicine, Volume 31, Issue 4,2021, Pages 15-20, doi:10.3969/j.issn.1005-8982.2021.04.003
China Journal of Modern Medicine, Volume 31, Issue 4,2021, Pages 81-85, doi:10.3969/j.issn.1005-8982.2021.04.014