The goal of this project is the creation of an extensive biomaterials bank. Materials (blood, serum, plasma, DNA) from all patients who participate in studies in the network will be collected for this purpose. The objective is a consistently high quality standard for the processing, storage and management of all samples. The biomaterials bank is an investment in the future by the network. It enables the competence network and the research community in general to acquire new scientific knowledge about the development, progression and prognosis of the different forms of heart failure.