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METHODS : Twenty - two patients were grouped according to their etiology based on the study of antiadrenal antibodies at diagnosis of the disease : 7 were positive ( autoimmune etiology or EAA ) , 11 were negative ( tuberculous etiology or EAT ) and in four serologic study was not available ( undetermined etiology or EAI ) .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 None