1. Division of Cardiovascular Diseases; Department of Medicine, Mayo Clinic Rochester, Rochester; MN USA
2. International Clinical Research Center; St. Anne's University Hospital; Brno Czech Republic
3. Center for Cardiovascular Prevention of the First Faculty of Medicine; Charles University and Thomayer Hospital; Prague Czech Republic
4. Department of Preventive Cardiology; Institute for Clinical and Experimental Medicine- IKEM; Prague Czech Republic
5. Department of Cardiology; Institute for Clinical and Experimental Medicine-IKEM; Prague Czech Republic