1 Division of Medicine, National Amyloidosis Centre, University College London, London, United Kingdom.
2 Centre for Diagnosis and Treatment of Cardiomyopathies, Cardiovascular Department, Azienda Sanitaria Universitaria Giuliano-Isontina (ASUGI), University of Trieste, Trieste, Italy.
3 European Reference Network for RARE, Low Prevalence and Complex Diseases of the Heart (ERN GUARD-Heart).