Definition gestational trophoblastic disease(GTD)is a group of disease originated from placental villose trophoblastic cells, including hydatidiform mole, invasive mole, choriocarci- noma and a kind of less common trophoblastic cell tumor in placenta
Chapter 14 Topics Structured Programming vS Object-Oriented Programming Using Inheritance to Create a New C++ class Type Using Composition( Containment) to Create a New C++ class Type Static vs Dynamic Binding of Operations to Objects