Clinical Center Niš, Clinic for Cardiology, Niš, Serbia
Clinical Hospital Center "Dr Dragiša Mišović-Dedinje", Department of Cardiology, Belgrade, Serbia
Clinical Hospital Center "Bežanijska Kosa", Department of Cardiology, Belgrade, Serbia
Massachusetts General Hospital, Boston, Massachusetts, United States
University of California, San Diego, California, United States
Children's Hospital of Pittsburg of UPMC, Pittsburgh, Pennsylvania, United States
A.O. Papa Giovanni XXIII Cardiologia 1, Torre 5, Bergamo, Italy
A.O. Spedali Civili di Brescia Cardiologia, Brescia, Italy
University Medical Centre Groningen, Groningen, Netherlands
Doheny Eye Center, Pasadena, California, United States
Ophthalmic Consultants of Boston, Boston, Massachusetts, United States
Cincinnati Eye Institute, Edgewood, Kentucky, United States
Massachusetts General Hospital, Boston, Massachusetts, United States
University of California, San Diego, California, United States
Children's Hospital of Pittsburg of UPMC, Pittsburgh, Pennsylvania, United States