GermanyHeartGermany, WestHeart RateGermany, EastHeart FailureHeart DiseasesHeart TransplantationHeart Defects, CongenitalNational SocialismFetal HeartHeart ValvesHeart AtriaBerlinHeart BlockBlattellidaeEuropeRisk FactorsAustriaMyocardiumTime FactorsHeart Arrest, InducedHeart Function TestsMyocardial ContractionProspective StudiesTreatment OutcomeMyocardial IschemiaQuestionnairesCoronary DiseaseHolocaustDogsMyocytes, CardiacPrevalenceHemodynamicsWorld War IIFollow-Up StudiesEugenicsCohort StudiesHistory, 19th CenturyCockroachesMyocardial InfarctionIncidenceRetrospective StudiesHistory, 20th CenturyConcentration CampsCardiac Output, LowAge FactorsVentricular Function, LeftRisk AssessmentCross-Sectional StudiesSwitzerlandHeart, ArtificialHeart Failure, SystolicCase-Control StudiesPerfusionRegistriesCardiomyopathy, DilatedCardiomegalyGenotypeInfant, NewbornChronic DiseaseNorth SeaHeart InjuriesReproducibility of ResultsHeart Rate, FetalHeart SeptumCross-Cultural ComparisonCardiotonic AgentsRheumatic Heart DiseaseStroke VolumeCardiomyopathiesEchocardiographyDog DiseasesMyocardial Reperfusion InjuryHeart ArrestSex FactorsPolitical SystemsPrognosisHeart Valve ProsthesisUSSRMolecular Sequence DataVentricular Dysfunction, LeftAge DistributionAdrenergic beta-AntagonistsHeart Failure, DiastolicAmerican Heart AssociationDisease OutbreaksVentricular RemodelingPolymerase Chain ReactionSeverity of Illness IndexSex DistributionHospitalizationPopulation SurveillanceInternationalityDisease Models, AnimalPredictive Value of TestsOxygen ConsumptionSensitivity and SpecificityAutonomic Nervous SystemCardiac Pacing, Artificial