1393
There also were no significant differences between groups when expressing diameters as the sum of the precommunicating segment of the anterior cerebral + sphenoidal segment of the middle cerebral + supraclinoid internal carotid artery + basilar artery divided by the diameter of the petrous internal carotid artery ( p greater than 0 . 05 , unpaired t - tests ) .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 None