First hCG Level as a Predictor of Ectopic Pregnancy after In Vitro Fertilization von Cookingham, L.M, Duran, E.H, Goossen, R.P, Shah, D.K, Sparks, A, Van Voorhis, B.J

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Predictors of Poor Early Pregnancy Outcome after In Vitro Fertilization von Cookingham, L.M, Duran, E.H, Goossen, R.P, Shah, D.K, Sparks, A, Van Voorhis, B.J

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