Locatelli F, Kabbara N, Ruggeri A, Ghavamzadeh A, Roberts I, Li CK, Bernaudin F, Vermylen C, Dalle JH, Stein J, Wynn R, Cordonnier C, Pinto F, Angelucci E, Socié G, Gluckman E, Walters MC, Rocha V, Eurocord and European Blood and Marrow Transplantation (EBMT) group