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Prediction of spontaneous preterm birth: salivary progesterone assay and transvaginal cervical length assessment after 24 weeks of gestation, another critical window of opportunity.
Abuelghar WM, Ellaithy MI, Swidan KH, Allam IS, Haggag HM. Abuelghar WM, et al. Among authors: swidan kh. J Matern Fetal Neonatal Med. 2019 Nov;32(22):3847-3858. doi: 10.1080/14767058.2018.1482872. Epub 2018 Jun 25. J Matern Fetal Neonatal Med. 2019. PMID: 29843547 Free article.