Global surveillance, national surveillance, and SARS.
Heymann
David L
DL
World Health Organization, Geneva, Switzerland. heymannd@who.int
Rodier
Guénaël
G
D004196:Disease Outbreaks; D006801:Humans; D011159:Population Surveillance / Q000379:methods*; D045169:Severe Acute Respiratory Syndrome / Q000453:epidemiology*; D014944:World Health Organization