DOI:
10.1055/s-00030576
Revista Brasileira de Ginecologia e Obstetrícia / RBGO Gynecology and Obstetrics
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References
Guzman ER, Walters C, Ananth CV. , et al.
A comparison of sonographic cervical parameters in predicting spontaneous preterm birth in high-risk singleton gestations.
Ultrasound Obstet Gynecol 2001;
18 (03) 204-210
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