Human chorionic gonadotropin titers in twin pregnancies.
D006063:Chorionic Gonadotropin / Q000652:urine*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D006828:Hydatidiform Mole / Q000175:diagnosis*; D008722:Methods; D011247:Pregnancy; D011272:Pregnancy, Multiple; D014427:Twins
D006063:Chorionic Gonadotropin