1. Adana State Hospital, Department of Cardiology, 01270 Adana, Turkey
2. Reyhanli State Hospital, Department of Cardiology, Reyhanli, Hatay, Turkey
3. Kızıltepe State Hospital, Department of Cardiology, Kızıltepe, Mardin, Turkey
4. Van Education and Research Hospital, Department of Cardiology, Van, Turkey
5. Çukurova University, School of Medicine, Department of Cardiology, 01330 Adana, Turkey