EpidemiologyEpidemiologic Research DesignNutritional Physiological PhenomenaEpidemiologic StudiesDietBias (Epidemiology)Nutrition AssessmentEpidemiologic MethodsDiet SurveysFood HabitsMolecular EpidemiologyIncidenceSEER ProgramPrevalenceDisease OutbreaksRisk FactorsUnited StatesPopulation SurveillanceAge DistributionConfounding Factors (Epidemiology)Infant, NewbornSeasonsGenotypeAge FactorsPhylogeny