ChiropracticManipulation, ChiropracticManipulation, SpinalPhysical TherapistsComplementary TherapiesNaturopathyBack PainEaracheAmerican Medical AssociationLow Back PainWashingtonMedicare Part BPatient Acceptance of Health CareOrthopedicsInflation, EconomicHealth Care SurveysSmall-Area AnalysisUnited StatesHealth Maintenance OrganizationsInsurance Claim ReportingInterprofessional RelationsOsteopathic PhysiciansQuestionnairesPhysicians, FamilyManipulation, Orthopedic