Data CollectionResearch DesignHealth SurveysGuidelines as TopicQuestionnairesCanadaResearchUnited StatesInternetHealth Care SurveysResearch Support as TopicEthics, ResearchResearch PersonnelNursing ResearchHealth Services ResearchTranslational Medical ResearchNutrition SurveysGenetic ResearchCross-Sectional StudiesClinical Nursing ResearchQualitative ResearchCommunity-Based Participatory ResearchDental ResearchBehavioral ResearchHealth Knowledge, Attitudes, PracticePrevalenceAttitude of Health PersonnelSocioeconomic FactorsGreat BritainRisk FactorsHuman ExperimentationInformed ConsentAge FactorsReproducibility of ResultsAcademies and InstitutesSex FactorsEmpirical ResearchCooperative BehaviorNational Institutes of Health (U.S.)UniversitiesLogistic ModelsAttitude to HealthPhysician's Practice PatternsTime FactorsPhysiciansNeoplasmsHealth StatusHistory, 20th CenturyClinical Trials as TopicEmbryo ResearchPublishingPopulation SurveillanceResearch ReportRural PopulationInformation DisseminationEuropeSmokingPublic HealthPeriodicals as TopicProgram EvaluationPublic OpinionHealth PolicyConsumer ParticipationAustraliaStem Cell ResearchHealth Services AccessibilityQuality of LifeInternational CooperationEducational StatusPatient SelectionEthnic GroupsInfant, NewbornEnglandOperations ResearchPatient SatisfactionBibliometricsStudentsUnited States Agency for Healthcare Research and QualityHealth PromotionLongitudinal StudiesDatabases, FactualDeveloping CountriesDecision MakingLibrary SurveysSampling StudiesDemographyPatient Acceptance of Health CareJapanHealth BehaviorBiological Specimen BanksUrban PopulationProgram DevelopmentResearcher-Subject RelationsAnimal ExperimentationChinaConfidentialityPregnancyRisk AssessmentResidence CharacteristicsRegression Analysis