DOI:
10.1055/s-00030576
Revista Brasileira de Ginecologia e Obstetrícia / RBGO Gynecology and Obstetrics
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References
Gramellini D, Fieni S, Molina E, Berretta R, Vadora E.
Transvaginal sonographic cervical length changes during normal pregnancy.
J Ultrasound Med 2002;
21 (03) 227-232 , quiz 234–235
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