1. Clinic of Cardiology; Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Center Training and Research Hospital; Istanbul Turkey
2. Clinic of Cardiology; Kadirli Government Hospital; Osmaniye Turkey
3. Clinic of Cardiology; Osmancik Government Hospital; Corum Turkey
4. Department of Cardiology; University Hospital Coventry; Coventry United Kingdom
5. Clinic of Cardiology; Bezmialem University Hospital; Istanbul Turkey