1. https://www.heart.org/en/news/2019/01/31/cardiovascular-diseases-affect-nearly-half-ofamerican-adults-statistics-show)
2. Connecting the Dots Between Chronic Disease and Oral Health;Sisk;CDS Review,2015
3. Periodontal disease as a risk marker in coronary heart disease and chronic kidney disease;Fisher;Current opinion in nephrology and hypertension,2010
4. Oral health and later coronary heart disease: cohort study of one million people;Batty;European journal of preventive cardiology,2018