1. Transplantation Laboratory, Haartman Institute; University of Helsinki; Helsinki FI-00014 Finland
2. Public Health Genomics Unit, Department of Chronic Disease Prevention; National Institute for Health and Welfare; Helsinki FI-00271 Finland
3. Institute for Molecular Medicine Finland (FIMM); Helsinki FI-00014 Finland
4. The Estonian Genome Center of the University of Tartu; Tartu 50090 Estonia
5. HUCH Heart and Lung Center, Division of Cardiology; Helsinki University Central Hospital; Helsinki FI-00290 Finland