49
Respiratory complaints were chronic cough ( 33 . 2 % ) , chronic bronchitis ( 39 . 7 % ) and dyspnea ( 23 . 8 % ) in textile workers compared to ( 6 . 2 % , 6 . 2 % and 1 . 5 % ) , respectively , in controls .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None