2018
The drug effect studied was the antagonism by metoprolol of terbutaline - induced hypokalemia .
 Chemical: metoprolol; Chemical: terbutaline; Disease: hypokalemia
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: metoprolol; Chemical: terbutaline; Disease: hypokalemia