76388
Clinical studies A 2006 Cochrane systematic review that reviewed studies published between 1966 and 2005 that investigated the efficacy of AA and twelve step facilitation ( TSF ) , concluded that " no experimental studies unequivocally demonstrated the effectiveness of AA " in treating alcoholism .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities:  
Answer:
 None