Pearl, S S <br/><br/>
Red color blindness.  [electronic resource] 

 -  CA: a cancer journal for clinicians   
 - 238 p.  digital 
<br/><br/> Publication Type: Case Reports; Letter 
<br/><br/><label>ISSN: </label>0007-9235 
<br/><br/><label>Standard No.: </label>10.3322/canjclin.28.4.238  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Color Vision Defects--complications<br/>Humans<br/>Male<br/>Rectal Neoplasms--complications