19664
A major experimental work in the rabbit , published by Romberg and P a ssler in 1899 , shifted attention to disturbed peripheral vascular tone as the mechanism of hypotension in these conditions .
 None
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