Geographic variations in the use of services :  do they have any clinical significance? / 
Robert H. Brook [and five others] ; supported by the U.S. Department of Health and Human Services. 
 - 11 pages ;  28 cm. 
 - A Rand note ;  N-3369-HHS .
 - Rand note ;  N-3369-HHS .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label> Hadiah 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Medical care--Utilization--United States.  <br/>Medical care--Cost control. --United States<br/>Clinical indications--United States.