the incidence of trophoblastic diseases , hydatidiform mole , partial mole , invasive mole , choriocarcinoma and persistent trophoblastic disease ( ptd ) was 3.22 , 1.67 , 1.20 , 0.07 , 0.06 and 0.20 , respectively , per 1,000 live births .
C2931618
trophoblastic diseases
C0020217
hydatidiform mole