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General practitioner practices in requesting laboratory tests for patients with gastroenteritis in the Netherlands, 2001–2002
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The epidemiology of suicide and attempted suicide in Dutch general practice 1983–2003
Internet-based monitoring of influenza-like illness (ILI) in the general population of the Netherlands during the 2003–2004 influenza season
Risk factors for acute respiratory tract infections in general practitioner patients in The Netherlands: a case-control study