1. From the Department of Medicine, Jagiellonian University Medical College, Krakow, Poland (T.J.G.).
2. Institute of Cardiovascular and Medical Sciences, University of Glasgow, United Kingdom (T.J.G.)
3. Department of Dental Prophylaxis and Experimental Dentistry, Jagiellonian Medical College, Krakow, Poland (M.C.-G.)
4. Department of Periodontology and Oral Sciences Research Group, University of Glasgow Dental School, United Kingdom (M.C.-G.).