4101
The actions of fenoterol - hydrobromide , ritodrin - HCl and placebo given to 10 healthy subjects by intravenous infusion in a double - blind crossover study were tested by this method .
 Chemical: fenoterol - hydrobromide; Chemical: ritodrin - HCl
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:
 Chemical: fenoterol - hydrobromide; Chemical: ritodrin - HCl