1. Placental pathology;Kraus,2004
2. Practice guideline for examination of the placenta;Langston;Arch Pathol Lab Med,1997
3. The pathology of pregnancy complicated by diabetes mellitus;Driscoll;Med Clin North Am,1965
4. Pathology of the placenta;Fox,1978
5. Abnormal maturation of villi;Becker,1975