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In the current study the efficacy and toxicity of the combination of GEM and VNB in elderly patients with advanced NSCLC or those with some contraindication to receiving cisplatin were assessed .
 toxicity, GEM, VNB, NSCLC, cisplatin
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 toxicity, GEM, VNB, NSCLC, cisplatin