Risk factors for a severe disease course in children with SARS-COV-2 infection following hematopoietic cell transplantation in the pre-Omicron period: a prospective multinational Infectious Disease Working Party from the European Society for Blood and Marrow Transplantation group (EBMT) and the Spanish Group of Hematopoietic Stem Cell Transplantation (GETH) study

Diana Averbuch, Rafael de la Cámara, Gloria Tridello, Nina Knelange, Т. А. Быкова, Marianne Ifversen, Veronika Dobsinska, Mouhab Ayas, Amir Ali Hamidieh, Herbert Pichler, Antonio Pérez‐Martínez, Simone Cesaro, Mikael Sundin, Isabel Badell, Peter Bader, Jan‐Erik Johansson, Oana Mirci‐Danicar, Petr Sedláček, Catherine Paillard, Brenda Gibson, Sarah Lawson, Nicolaus Kröger, Selim Corbacioglu, Małgorzata Mikulska, José Luís Piñana, Jan Styczyński, Per Ljungman