Olmos, J <br/><br/>
[Do the physical characteristics of radiopaque markers modify the results of the measurement of colonic transit time?].  [electronic resource] 

 -  Acta gastroenterologica Latinoamericana  1994 
 - 287-90 p.  digital 
<br/><br/> Publication Type: Comparative Study; Journal Article 
<br/><br/><label>ISSN: </label>0300-9033 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adult<br/>Aged<br/>Barium<br/>Colon--diagnostic imaging<br/>Constipation--diagnosis<br/>Contrast Media<br/>Female<br/>Gastrointestinal Transit--physiology<br/>Humans<br/>Male<br/>Middle Aged<br/>Polyethylenes<br/>Prospective Studies<br/>Radiography<br/>Time Factors