547
Cephradine 250 mg at night for 12 months was given as a prophylactic measure to 33 female patients of mean age 41 . 6 years , who had a history in the preceding 12 months of between three and 24 ( median = 7 ) episodes of frequency and / or dysuria .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 None