<qa>  What is the goal of the LENA project?This clinical trial is one of three clinical trials of the European Commission FP7-funded LENA Labeling of Enalapril from Neonates to Adolescents project: 50 children with heart failure due to congenital heart disease LENA-Work Package WP09 Trial, and 50 children with heart failure due to dilated cardiomyopathy LENA-WP08 Trial get treated with an optimal dose of enalapril ODMTs for up to 8 weeks after thorough, individualised titration and get invited to join the 10 months Safety Follow-up Study LENA-WP10 Trial. 