2439
Pacing the Roux limb abolished the ectopic pacemakers , restored the slow emptying of liquids to the more rapid rate found in the Billroth dogs ( t1 / 2 : paced Roux , 72 + / - 15 minutes ; Billroth , 43 + / - 9 minutes ; p greater than 0 . 05 ) and did not change emptying of solids .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 None