12376
Comparative analysis of various techniques of prostatic drainage in patients with chronic obstructive prostatitis ] The efficacy of prostatic drainage using transurethral vacuum aspiration ( Introl - 4 unit ) and transrectal pneumovibromassage ( PVM - R - 01 ) was compared in 1511 patients with chronic obstructive prostatitis .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
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