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Amenaza de parto pretérmino durante el tercer trimestre de gestación…
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Peng, S., Chen, H., Li, X. et al. Maternal age and educational level modify the association between chronic hepatitis B infection and preterm labor. BMC Pregnancy Childbirth 20, 38 (2020). https://doi.org/10.1186/s12884-020-2729-1