Linde, Annika [Darwin's principles direct the development of A/H1N1. Influenza virus evolution enormously complex--the new influenza is not and exception]. [electronic resource] - Lakartidningen - 1552-5 p. digital Publication Type: Journal Article; Review ISSN: 0023-7205 Subjects--Topical Terms: AnimalsBiological EvolutionDisease OutbreaksHumansInfluenza A Virus, H1N1 Subtype--geneticsInfluenza, Human--epidemiologyMutationPneumonia, Viral--virologySwine--virology