1. Division of Cardiology, Department of Internal Medicine; Henry Ford Hospital; Detroit Michigan
2. Division of Cardiology, Department of Internal Medicine; St John Hospital and Medical Center; Detroit Michigan
3. Cardiovascular Fellowship Program; Mercy-Health St Vincent Medical Center; Toledo Ohio
4. Cava de' Tirreni and Amalfi Coast Hospital; University of Salerno; Amalfi Italy
5. Cardioangiological Center Bethanien (CCB) and AGAPLESION Bethanien Hospital; Frankfurt Germany
6. Duke Clinical Research Institute; Durham North Carolina