title: REMINISCENCES AND PROSPECTIVES IN AMBULATORY SERVICES.
mesh_terms: D006801:Humans; D007341:Insurance; D007348:Insurance, Health; D008137:Longitudinal Studies; D010044:Outpatient Clinics, Hospital; D011446:Prospective Studies; D014481:United States
keywords: HOSPITAL OUTPATIENT CLINICS; INSURANCE, HEALTH; UNITED STATES