1809
DATA SOURCES : MEDLINE and Cochrane Library ( search dates , 1 January 2001 to 28 August 2008 ) , recent systematic reviews , reference lists of retrieved articles , and suggestions from experts .
 None
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:
 None