1. Department of General Dentistry, Boston University, Goldman School of Dental Medicine, 100 East Newton Street, Boston, MA 02118, USA;
2. Harvard School of Public Health, Department of Nutrition, Boston, MA, USA;
3. US Air Force 59th Dental Squadron, San Antonio, TX, USA;
4. Stroke Neuroscience Unit, NINDS, National Institutes of Health, Bethesda, MD, USA;
5. Clinical Research Center/Periodontology and Oral Biology, Boston University Goldman School of Dental Medicine, Boston, MA, USA; and