Correction: Cryopreservation of unrelated donor hematopoietic stem cells: the right answer for transplantations during the COVID-19 pandemic?

Fernandez-Sojo J, Azqueta C, Valdivia E, Martorell L, Medina-Boronat L, Martínez-Llonch N, Torrents S, Codinach M, Canals C, Elorza I, Parody R, Martino R, Trabazo M, Díaz de Heredia C, Ferra C, Valcárcel D, Linares M, Ancochea Á, García-Rey E, García-Muñoz N, Medina L, Castillo N, Carreras E, Villa J, Querol S.