Surveillance: to what end?
Johnston
Brian D
BD
D002681:China / Q000453:epidemiology; D004632:Emergency Medical Services / Q000706:statistics & numerical data; D014943:Global Health; D006801:Humans; D011159:Population Surveillance / Q000379:methods*; D017410:Practice Guidelines as Topic; D012107:Research Design; D014944:World Health Organization; D014947:Wounds and Injuries / Q000453:epidemiology / Q000517:prevention & control*