Immunology / Adolescent / Cardiovascular disease / Prospective studies / Humans / Left Ventricular Assist Device / Systemic sclerosis / Female / Male / Young Adult / Clinical Sciences / Aged / Middle Aged / Adult / Public health systems and services research / Biological markers / Sensitivity and Specificity / Area Under the Curve / Prospective Study / Brain Natriuretic Peptide / Heart Diseases / Left Ventricular Assist Device / Systemic sclerosis / Female / Male / Young Adult / Clinical Sciences / Aged / Middle Aged / Adult / Public health systems and services research / Biological markers / Sensitivity and Specificity / Area Under the Curve / Prospective Study / Brain Natriuretic Peptide / Heart Diseases