Circadian RhythmSleep Disorders, Circadian RhythmSuprachiasmatic NucleusPeriod Circadian ProteinsCircadian Rhythm Signaling Peptides and ProteinsCLOCK ProteinsBiological ClocksCircadian ClocksPhotoperiodARNTL Transcription FactorsChronobiology DisordersMelatoninActivity CyclesLightDarknessJet Lag SyndromeModels, BiologicalCryptochromesTime FactorsPrognosisRisk FactorsBody TemperatureKi-67 AntigenSleepPeriodicityMotor ActivityPineal GlandNuclear Receptor Subfamily 1, Group D, Member 1Tumor Markers, BiologicalEnvironmentBreast NeoplasmsSex FactorsSeasonsReceptors, ProgesteronePhototherapyImmunohistochemistryGene Expression ProfilingCasein Kinase IepsilonBiological MarkersAnalysis of VarianceChronotherapyProspective StudiesLightingAge FactorsSocioeconomic FactorsChronobiology PhenomenaMultivariate AnalysisSurvival AnalysisFlavoproteinsReceptors, EstrogenNeoplasm StagingPredictive Value of TestsTreatment OutcomeWakefulnessHydrocortisoneRetrospective StudiesRegression AnalysisUnited StatesArylalkylamine N-AcetyltransferaseFollow-Up StudiesGene Expression RegulationCohort StudiesDrug ChronotherapyFeeding BehaviorBehavior, AnimalPregnancyReceptors, MelatoninMesocricetusLogistic ModelsRisk AssessmentSeasonal Affective DisorderRod OpsinsTranscription FactorsEuropean Continental Ancestry GroupCross-Sectional StudiesDrosophila ProteinsOscillometryRNA, MessengerWork Schedule ToleranceNuclear Receptor Subfamily 1, Group F, Member 1Heart RateCorticosteroneNuclear ProteinsLight Signal TransductionFeedback, PhysiologicalMolecular Sequence DataBiological FactorsDorsomedial Hypothalamic NucleusSleep DeprivationSynechococcusPhotoreceptor Cells, InvertebratePrevalenceOcular Physiological PhenomenaSalivaMutationBasic Helix-Loop-Helix Transcription FactorsDyssomniasAlpha RhythmAtrial FibrillationLuciferases