Akintoye SO, Brennan MT, Graber CJ, McKinney BE, Rams TE, Barrett AJ, Atkinson JC. A retrospective investigation of advanced periodontal disease as a risk factor for septicemia in hematopoietic stem cell and bone marrow transplant recipients. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2002 Nov; 94(5):581-8.