1. Placental pathology, a survival guide;Roberts;Arch Pathol Lab Med,2008
2. Practice guideline for examination of the placenta: Developed by the Placental Pathology Practice Guideline Development Task Force of the College of American Pathologists;Langston;Arch Pathol Lab Med,1997
3. Subacute necrotizing funisitis. A variant of cord inflammation with a high rate of perinatal infection;Navvaro;J Pediatr,1974