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Gitsels-van der Wal JT, Gitsels LA, Hooker A, Scholing P, Martin L, Feijen-de Jong EI.Gitsels-van der Wal JT, et al.BMC Pregnancy Childbirth. 2020 May 6;20(1):269. doi: 10.1186/s12884-020-02957-1.BMC Pregnancy Childbirth. 2020.PMID: 32375734Free PMC article.