1. Unit of Oral and Maxillofacial Medicine Surgery and Pathology, School of Clinical Dentistry, University of Sheffield, Sheffield, UK
2. Department of Oral Medicine, Carolinas Medical Center, Charlotte, NC, USA
3. Department of Cardiology, Taunton and Somerset NHS Trust, Taunton, Somerset, UK
4. Division of Infectious Diseases, Washington University in St. Louis School of Medicine, St. Louis, MO, USA
5. Division of Infectious Diseases, Department of Medicine and the Department of Cardiovascular Medicine, Mayo Clinic College of Medicine, Rochester, MN, USA