Work Schedule TolerancePersonnel Staffing and SchedulingSleep Disorders, Circadian RhythmWorkWomen, WorkingHospital Bed Capacity, 100 to 299Occupational HealthCircadian RhythmWorkloadSleepDrug ToleranceOccupational DiseasesReinforcement ScheduleSleep DeprivationChild CareFatigueAccidents, OccupationalImmune ToleranceEmploymentQuestionnairesChronobiology DisordersTime FactorsJet Lag SyndromeNursesStress, PsychologicalDrug Administration ScheduleNursing StaffGlucose Tolerance TestMelatoninTransplantation ToleranceColumbidaeImmunization ScheduleLightingNoise, OccupationalExtraction and Processing IndustryRisk FactorsIndustryUnited StatesFee SchedulesMental FatigueReinforcement (Psychology)Nursing Staff, Hospital