To investigate the risk of atrial fibrillation or atrial flutter in patients with periodontitis (PD) in comparison with individuals without PD. We used the 1999-2010 Taiwanese National Health Insurance Research Database to identify cases of PD in the year 2000 matching (1:1) with persons without PD during 1999-2000 according to sex and individual age as the control group. Using Cox pr... https://www.lisamalloryphoto.com/product-category/insect-repellent/