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In addition , effects of the 14 SNPs on BPH related clinical traits , including International Prostate Symptom Score ( IPSS ) , prostate volume , total PSA , and free PSA were evaluated using linear regression analysis .
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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:
 None