title: Severe influenza A (H1N1)v in patients without any known risk factor.
authors: Carles
authors: C
authors: Alonso-Tarrés
authors: Cristina
authors: C
authors: Cortes-Lletget
authors: Sara
authors: S
authors: Pintado
authors: Assumpta
authors: A
authors: Ricart
mesh_terms: D000998:Antiviral Agents / Q000627:therapeutic use; D016638:Critical Illness / Q000453:epidemiology / Q000628:therapy; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype; D007251:Influenza, Human / Q000188:drug therapy / Q000453:epidemiology*; D015337:Multicenter Studies as Topic; D012307:Risk Factors; D012720:Severity of Illness Index
chemical_list: D000998:Antiviral Agents