effect of comorbidity on appropriateness ratings for two gastrointestinal procedures
By: Katherine L. Kahn...[et al.]
Contributors: Rand Corporation.
Series: Rand Note : -- N-3110-FMP
Publisher: Rand
Published: 1991
Place of publication: Santa Monica, CA
Language: eng
Subjects: Cholecystectomy -- Utilization.; Medical care -- Utilization review.
Notes: "Supported by the U.S. Department of Health and Human Services."

Includes bibliographical references.