Gelfand, D W <br/><br/>
Decreasing numbers of gastrointestinal studies: report of data from 69 radiologic practices.  [electronic resource] 

 -  AJR. American journal of roentgenology  Jun 1987 
 - 1133-6 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0361-803X 
<br/><br/><label>Standard No.: </label>10.2214/ajr.148.6.1133  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gastrointestinal Diseases--diagnostic imaging<br/>Humans<br/>Radiography--statistics & numerical data<br/>Radiology--trends<br/>Statistics as Topic<br/>United States