2086
METHODS : The former group included patients who had been treated with at least four PGE1 alpha - ciclodestrina , short - term treatment cycles per year while the latter was a historical reference group managed without prostaglandins .
 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