Arias Vallejo, E <br/><br/>
[Ulcerative colitis. Introduction].  [electronic resource] 

 -  Revista espanola de las enfermedades del aparato digestivo  Nov 1972 
 - 623 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0034-9437 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Colitis, Ulcerative<br/>Humans