Surgery in outpatient settings : a four-state study / Title from OIG web site: Impact of regulating outpatient surgery Department of Health and Human Services, Office of Inspector General. - 1 online resource (2, 10, A-1 pages) : illustrations "April 1992." "OEI-07-91-01470." CRDP Project record. Includes bibliographical references. Subjects--Topical Terms: Ambulatory surgery--Monitoring--United States.Surgical clinics--Accreditation--United States. GPO Item No.: 0445-B-07 (online) Gov. Doc. Class. No.: HE 1.75:OEI-07-91-01470 Report. No.: OEI-07-91-01470