8955
A number of bronchoscopic techniques have since been developed under the term " bronchoscopic lung volume reduction " ( BLVR ) , aiming to lower the complications and the cost while facilitating the procedure of lung volume approach in patients with emphysema .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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