References
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2 O’leary, B.D., et al., 2020. Anal sphincter injury associated with vaginal twin delivery. Am J Perinatol. 37, 1134-1139. doi: 10.1055/s-0039-1692392.
3
Cao, X., et al., 2022. Twin growth discordance and risk of postpartum hemorrhage: A retrospective cohort study. Front Med (Lausanne). 9, 876411. doi: 10.3389/fmed.2022.8764114 Neiman, E., et al., 2020. Outcomes of waterbirth in a us hospital-based midwifery practice: A retrospective cohort study of water immersion during labor and birth. J Midwifery Womens Health. 65, 216-223. doi: 10.1111/jmwh.13033