HE4u2 consortium (in alphabetical order): José Pedro AMORIM, Amandine BERNAL, Sofia CASTANHEIRA PAIS, Françoise DE VIRON, Josephine FINN, Camilla FITZSIMONS, Bernie GRUMMELL, Timo HALTTUNEN, Beate HÖRR, Amelia LOPES, Kia LUNDQVIST, Isabel MENEZES, Tiago NEVES, Agnes RASCHAUER, Katharina RESCH, Carme ROYO, Alfredo SOEIRO, Iris THIMM, Francesca URAS, Leena VANHAKYLA, Georgios ZARIFIS