4749
As for 31 stage I - II lung cancer patients , CR has been observed in 82 . 8 % of them and PR in 13 . 8 % ; the response was always assessed with chest radiography , CT , FBS , cytology and / or histology .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 None