[1] Natl Publ Hlth Inst, Enterovirus Lab, FIN-00300 Helsinki, Finland
[2] Univ Helsinki, Haartman Inst, Transplantat Lab, FIN-00014 Helsinki, Finland
[3] Univ Helsinki, Hosp Children & Adolescents, FIN-00014 Helsinki, Finland
[4] Free Univ Brussels, Ctr Diabet Res, B-1090 Brussels, Belgium