7769
Between 2005 and 2008 , 37 women underwent injection of 100 IU of botulinum toxin type A into the puborectalis and pubococcygeous muscles with dysmenorrhoea , dyspareunia , dyschesia , and non - menstrual pelvic pain assessed using a visual analogue scale ( VAS ) , and vaginal pressure measured by vaginal manometry , at 0 , 4 , 12 and 26 weeks from each injection .
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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