Societies, MedicalPhysiciansPhysicians, Primary CarePhysicians, FamilyPhysician's Practice PatternsPhysician's RolePhysicians, WomenAttitude of Health PersonnelPhysician AssistantsPhysician-Patient RelationsUnited StatesPhysicians' OfficesPhysician ImpairmentPhysician Incentive PlansMedicineSpecializationQuestionnairesWorld Health OrganizationPrimary Health CareHealth Care SurveysFamily PracticeClinical CompetenceHealth Maintenance Organizations