Fetal Diagnosis and Therapy · 2002 · 76 citations · 14 references
Low free beta-hCG is associated with a higher incidence of spontaneous miscarriage but is a poor predictor of other pregnancy complications.
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Yuval Yaron, Michele Cherry, Ralph L. Kramer et al. · American Journal of Obstetrics and Gynecology · 1999 · 181 citations
Elevated second-trimester human chorionic gonadotropin and subsequent pregnancy-induced hypertension
Tanya K. Sorensen, Michelle A. Williams, Rosalee W. Zingheim et al. · American Journal of Obstetrics and Gynecology · 1993 · 96 citations
Hypertension, Gestational Hypertension, Subsequent Pregnancy-induced Hypertension +8