775
Randomized clinical trials comparing VNR with other drugs in the treatment of cancer were searched in Medline , Embase , Evidence - based Medicine Reviews databases and the Cochrane library from 1987 to 2002 .
 Chemical: VNR; Disease: cancer
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: VNR; Disease: cancer