Chronic use of inhaled corticosteroids in patients admitted for respiratory virus infections: a 6-year prospective multicenter study per David Luque-Paz, Pierre Tattevin, Paul Loubet, François Bénézit, Vincent Thibault, Fabrice Lainé, Philippe Vanhems, Selilah Amour, Bruno Lina, Xavier Duval, Anne-Sophie L’Honneur, Nadhira Fidouh, Christine Vallejo, Sophie Alain, Florence Galtier, Vincent Foulongne, Gisèle Lagathu, Nezha Lenzi, Zineb Lesieur, Odile Launay, Stéphane Jouneau, the FLUVAC Study Group