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610 Medizin
1
Disease Notification/statistics & numerical data
Europe/epidemiology
1
European Union/statistics & numerical data
1
H1N1 Subtype/isolation & purification
1
Humans
1
Incidence
1
Influenza A Virus
1
Influenza Human/diagnosis
1
Influenza Human/epidemiology
1
Influenza Human/virology
1
Pandemics
1
Population Surveillance
1
Risk Factors
1
Severity of Illness Index
1
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