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Mar 22 2009, 9:15 PM EDT gmack
 
edit 412 words added
Change: The process used in epidemiological studies and clinical trials in which the participants, investigators and/or assessors remain ignorant concerning the treatments which participants are receiving.   View changes from previous version. (Word count: 1317)
Mar 4 2008, 11:11 PM EST gmack
 
edit 6 words added
3 words deleted
Mar 4 2008, 11:10 PM EST Anonymous
 
edit 10 words added
5 words deleted
Aug 17 2007, 3:01 AM EDT gmack
 
edit 857 words added
Aug 17 2007, 2:57 AM EDT gmack
 
create No content added or deleted.