1. Division of Periodontics, College of Dental Medicine; Columbia University; New York NY USA
2. Section of Geriodontics, Department of Conservative Dentistry and Periodontology; University Hospital Jena, Friedrich Schiller University; Jena Germany
3. Division of Cardiology; Columbia University College of Physicians and Surgeons; New York NY USA
4. Department of Psychiatry; Columbia University College of Physicians and Surgeons; New York NY USA
5. Department of Cardiology; The Mount Sinai Hospital; New York NY USA
6. Division of Cardiology, Angiology, Pneumology and Intensive Medical Care; University Hospital Jena, Friedrich-Schiller-University; Jena Germany