[1] UCL, Royal Free Hosp NHS Fdn Trust, Natl Amyloidosis Ctr, Div Med, London, England
[2] Univ Florence, Careggi Univ Hosp, Cardiomyopathy Unit, Florence, Italy
[3] Med Univ Vienna, Dept Internal Med 2, Div Cardiol, Vienna, Austria
[4] Univ Brescia, Dept Med & Surg Special Radiol Sci & Publ Hlth, Cardiol, ASST Spedali Civili, London, England
[5] Univ Padua, Dept Cardiac Thorac & Vasc Sci & Publ Hlth, Padua, Italy
[6] IRCCS Azienda Osped Univ Bologna, Cardiol Unit, Bologna, Italy
[7] Univ Trieste, Azienda Sanit Univ Giuliano Isontina, Cardiovasc Dept, Ctr Diag & Treatment Cardiomyopathies, Trieste, Italy
[8] OHSU, Knight Cardiovasc Inst, Portland, OR USA
[9] Ferrara Univ Hosp, Cardiol Ctr, Porto Recanati, Italy
[10] Univ Calif San Diego, Med Ctr, Dept Med, La Jolla, CA USA
[11] Sapienza Univ, Fac Med & Psychol, Dept Clin & Mol Med, Rome, Italy
[12] Univ Padua, Dept Cardiac Thorac & Vasc Sci & Publ Hlth, Padua, Italy
[13] Univ Genoa, Cardiovasc Unit, Genoa, Italy
[14] Med Univ Vienna, Div Cardiol, Vienna, Austria
[15] Sapienza Univ Rome, Policlin Umberto 1, Dept Cardiovasc Resp Dis Nephrol Anesthesiol & Ge, Rome, Italy
[16] Royal Free Hosp, London, England
[17] Royal Free Hosp, Natl Amyloidosis Ctr, London, England
[18] UCL, London, England
[19] Natl Amyloidosis Ctr, London, England
[20] UCL, Royal Free Hosp, Div Med, London, England
[21] Fdn Gabriele Monasterio, Cardiol Div, Pisa, Italy
[22] Univ Brescia, Cardiol Div, Brescia, Italy
[23] Brigham & Womens Hosp, Cardiovasc Dept, 75 Francis St, Boston, MA 02115 USA