PneumoniaPneumonia, BacterialPneumonia, ViralPneumonia, PneumococcalCryptogenic Organizing PneumoniaPneumonia, PneumocystisPneumonia, StaphylococcalPneumonia, Ventilator-AssociatedPneumonia, AspirationCommunity-Acquired InfectionsPneumonia, MycoplasmaPneumonia, LipidLung Diseases, InterstitialTreatment OutcomeSeverity of Illness IndexLungProspective StudiesRetrospective StudiesAnti-Bacterial AgentsTime FactorsIdiopathic Interstitial PneumoniasFollow-Up StudiesRisk FactorsTomography, X-Ray ComputedRadiography, ThoracicStreptococcus pneumoniaeDepressionBronchoalveolar Lavage FluidAcute DiseaseSymptom AssessmentPneumocystis jiroveciiMurine pneumonia virusMagnetic Resonance ImagingQuestionnairesFatal OutcomePneumocystisSensitivity and SpecificityPrevalenceHospitalizationLegionnaires' DiseaseBehavioral SymptomsMycoplasma pneumoniaeDisease Models, AnimalPsychiatric Status Rating ScalesIncidenceCross InfectionCohort StudiesInfant, NewbornPulmonary EosinophiliaRespiratory Tract InfectionsTrimethoprim-Sulfamethoxazole CombinationAge FactorsPredictive Value of TestsSchizophreniaCase-Control StudiesChronic DiseaseBronchopneumoniaCoughSyndromeInfluenza, HumanPneumonia, Progressive Interstitial, of SheepPrognosisRespiration, ArtificialIntensive Care UnitsComorbidityVentilators, MechanicalCross-Sectional StudiesBronchoalveolar LavageBrainFeverBiological MarkersQuality of LifeImmunocompromised HostAsthmaPolymerase Chain ReactionPsychotic DisordersSputumBiopsyLongitudinal StudiesDisease ProgressionDisease OutbreaksLung DiseasesJapanDeglutition DisordersRecurrenceDrug Therapy, CombinationDiarrheaSchizophrenic PsychologyAIDS-Related Opportunistic InfectionsReproducibility of ResultsAnti-Infective AgentsPseudomonas InfectionsPneumonia of Swine, MycoplasmalPneumococcal VaccinesAdrenal Cortex HormonesPrednisoloneUnited StatesGastrointestinal DiseasesEmpyemaStatistics, Nonparametric