Respiratory Tract InfectionsOtitis MediaUrinary Tract InfectionsCommon ColdAnti-Bacterial AgentsTonsillitisRespiratory SystemNasopharynxParamyxoviridae InfectionsPharyngitisMetapneumovirusAcute DiseaseRespiratory Syncytial Virus InfectionsHuman bocavirusSinusitisVirus DiseasesRespiratory Syncytial VirusesDrug UtilizationRhinovirusPicornaviridae InfectionsLaryngismusBacterial InfectionsCoughBronchitisPhysician's Practice PatternsHaemophilus influenzaeNasal MucosaStreptococcus pneumoniaeGuaifenesinMoraxella (Branhamella) catarrhalisAntitussive AgentsHexylresorcinolPneumoniaRespiratory Tract DiseasesProspective StudiesAdenoidsInfant, NewbornDrug PrescriptionsAdenoidectomySeasonsCommunity-Acquired InfectionsLethargyFeverPneumonia, ViralRespiratory SoundsHaemophilus InfectionsBronchiolitisNeisseriaceae InfectionsFamily PracticeStreptococcal InfectionsSelf MedicationRespiratory Syncytial Virus, HumanExpectorantsInfluenza, HumanNoseWatchful WaitingStreptococcus pyogenesReproductive Tract InfectionsDouble-Blind MethodPneumonia, BacterialLungAsthmaRhinitisBocavirusMycoplasma pneumoniaeIncidencePharynxAmoxicillin-Potassium Clavulanate CombinationAnti-Infective AgentsVirusesRecurrenceParvovirinaeBodily SecretionsRetrospective StudiesParvoviridae InfectionsAnti-Infective Agents, UrinaryPneumococcal InfectionsNasal CavityUrinary TractMoraxellaceae InfectionsTreatment OutcomeDiagnostic Test ApprovalRisk FactorsMicrobial Sensitivity TestsPrevalenceMacrolidesTracheaTime FactorsSputumRespiratory Tract NeoplasmsNetherlandsRespirovirus InfectionsDrug Resistance, BacterialAge FactorsBordetella InfectionsBacteriuriaBordetella bronchiseptica