1. Echocardiography Research Center Rajaei Cardiovascular Medical and Research Center Iran University of Medical Sciences Tehran Iran
2. Adult Congenital Heart Disease Department Rajaei Cardiovascular, Medical and Research Center Iran University of Medical Sciences Tehran Iran
3. Department of Cardiology Shahrkord University of Medical Sciences Shahrkord Iran
4. Cardiovascular Research Center Tabriz University of Medical Sciences Tabriz Iran
5. Anesthesiology Department University of Buffalo Buffalo NY USA