DOI: 10.1055/s-00000089

Ultraschall in der Medizin - European Journal of Ultrasound

References

Burger M, Weber-Rossler T, Willmann M.
Measurement of the pregnant cervix by transvaginal sonography: an interobserver study and new standards to improve the interobserver variability.

Ultrasound Obstet Gynecol 1997 ;
9: 188-193

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