Work Schedule TolerancePersonnel Staffing and SchedulingPhysiciansWorkWomen, WorkingSleep Disorders, Circadian RhythmHospital Bed Capacity, 100 to 299WorkloadDrug ToleranceOccupational HealthReinforcement ScheduleChild CareImmune TolerancePhysicians, Primary CarePhysicians, FamilyPhysician's Practice PatternsCircadian RhythmSleep DeprivationEmploymentSleepOccupational DiseasesPhysician's RoleFatigueQuestionnairesAccidents, OccupationalTime FactorsUnited StatesDrug Administration ScheduleGlucose Tolerance TestStress, PsychologicalPhysicians, WomenAttitude of Health PersonnelPhysician AssistantsPhysician-Patient RelationsTransplantation ToleranceFee SchedulesColumbidaeImmunization SchedulePhysician ImpairmentPhysicians' OfficesSpecializationMedicinePhysician Incentive PlansReinforcement (Psychology)Family PracticePrimary Health CareConditioning, OperantClinical CompetenceHealth Care SurveysWork Capacity EvaluationDose-Response Relationship, DrugInternal MedicineOntario