Worldwide survey of T2* cardiovascular magnetic resonance in Thalassaemia av El-Beshlawy Amal, Rangelova Mirella, Aydinok Yesim, Almeida Ana, Hazirolan Tuncay, Perifanis Vassilios, Michos Andreas, Vini Demetra, Drossou Marouso, Ladis Vassilis, Kattamis Antonis, Forni Gianluca, Danjou Fabrice, Galanello Renzo, Walker Malcolm, Porter John B, Anderson Lisa, Kirk Paul, He Taigang, Carpenter John-Paul, Elalfy Mohsen, Alnasser Ibrahim, Daar Shahina, Fernandes Juliano, Pennell Dudley J