Chinese Journal of Perinatal Medicine, Volume 24, Issue 9,2021, Pages 697-699, doi:10.3760/cma.j.cn113903-20210207-00114
Chinese Journal of Perinatal Medicine, Volume 24, Issue 9,2021, Pages 693-696, doi:10.3760/cma.j.cn113903-20201118-01126
Chinese Journal of Perinatal Medicine, Volume 24, Issue 9,2021, Pages 700-704, doi:10.3760/cma.j.cn113903-20201202-01192
Chinese Journal of Perinatal Medicine, Volume 24, Issue 9,2021, Pages 685-688, doi:10.3760/cma.j.cn113903-20201103-01085
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