DOI: 10.1055/s-00030576

Revista Brasileira de Ginecologia e Obstetrícia / RBGO Gynecology and Obstetrics

References

Bernaschek G, Rudelstorfer R, Csaicsich P.
Vaginal sonography versus serum human chorionic gonadotropin in early detection of pregnancy.

Am J Obstet Gynecol 1988;
158 (3 Pt 1): 608-612

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