Unusual pattern of influenza mortality in 1989/90.
H E
HE
Tillett
S
S
Nicholas
J M
JM
Watson
D000328:Adult; D000368:Aged; D004196:Disease Outbreaks; D004739:England / Q000453:epidemiology; D006801:Humans; D007251:Influenza, Human / Q000401:mortality*; D008875:Middle Aged; D012606:Scotland / Q000453:epidemiology; D014852:Wales / Q000453:epidemiology