Defining the rise of serum HCG in viable pregnancies achieved through use of IVF.

Chung K, Sammel MD, Coutifaris C, Chalian R, Lin K, Castelbaum AJ, Freedman MF, Barnhart KT. Defining the rise of serum HCG in viable pregnancies achieved through use of IVF. Hum Reprod. 2006 Mar; 21(3):823-8.

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